From a156db845ac39b252aa9ca15604945298f61816b Mon Sep 17 00:00:00 2001
From: STEINNI <nicolas.stein@ext.ec.europa.eu>
Date: Sat, 28 Feb 2026 20:55:44 +0000
Subject: [PATCH] graflow split tests + fixed height bug + fixed subflow
 reenter loses style

---
 app/assets/html/test.html           | 184 +---------------------------
 app/assets/html/test1.html          |  92 ++++++++++++++
 app/assets/html/test2.html          |  92 ++++++++++++++
 app/assets/html/test3.html          |  90 ++++++++++++++
 app/assets/html/test4.html          |  91 ++++++++++++++
 app/thirdparty/buildoz/bzGraflow.js |  24 +++-
 6 files changed, 389 insertions(+), 184 deletions(-)
 create mode 100644 app/assets/html/test1.html
 create mode 100644 app/assets/html/test2.html
 create mode 100644 app/assets/html/test3.html
 create mode 100644 app/assets/html/test4.html

diff --git a/app/assets/html/test.html b/app/assets/html/test.html
index 87fdd24..0438f5e 100644
--- a/app/assets/html/test.html
+++ b/app/assets/html/test.html
@@ -4,186 +4,14 @@
 		<title>graflow</title>
 		<meta charset="utf-8">
 		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
-		<link type="text/css" rel="stylesheet" href="/app/thirdparty/eicui/eicui-2.0.css">
-        <link type="text/css" rel="stylesheet" href="../../thirdparty/buildoz/buildoz.css">
-        <script src="../../thirdparty/buildoz/buildoz.js"></script>      
-        <script src="../../thirdparty/buildoz/bzGraflow.js"></script>
-        <style>
-            @font-face { /*FF does not indirectly load if inside a shawdow-dom */
-                font-family: 'glyphs';
-                src:  url('/app/assets/styles/fonts/glyphs.eot');
-                src:  url('/app/assets/styles/fonts/glyphs.eot') format('embedded-opentype'),
-                    url('/app/assets/styles/fonts/glyphs.ttf') format('truetype'),
-                    url('/app/assets/styles/fonts/glyphs.woff') format('woff'),
-                    url('/app/assets/styles/fonts/glyphs.svg') format('svg');
-                font-weight: normal;
-                font-style: normal;
-                font-display: block;
-            }
-            body{
-                display: grid;
-                grid-gap: 5px;
-                background:#888; 
-                font-size: 16px;
-            }
-            .demooptions{
-                padding: 2px;
-                position: absolute;
-                top: 2px;
-                right: 2px;
-                width: 10em;
-                background: #FFFB;
-                border-radius: 5px;
-                text-align: center;
-                z-index:99;
-                font-size: .7em;
-                border: 1px solid #999;
-            }
-            .demooptions button{
-                text-transform: none;
-                margin: 2px;
-                font-size: 1em;
-            }            
-            bz-graflow{
-                overflow: scroll;
-                border: 2px solid black;
-            }
-            bz-graflow.compunet{ grid-column: 1 / -1; width: 80vw; height: 40vh; background:black; }
-            bz-graflow.eic{ grid-column: 1 / -1; width: 80vw; height: 50vh; background: var(--eicui-base-color-grey-10); }
-            bz-graflow.organi{ width: 40vw; height: 100vh; background:black; }
-          </style>
-        <script>
-            window.addEventListener('load',()=>{
-                let grflw1 = document.querySelector('bz-graflow.compunet')
-                grflw1.addEventListener('subflowLoaded',
-                    (evt) => { grflw1 = evt.detail.subflow }
-                )
-                grflw1.addEventListener('subflowExited',
-                    (evt) => { grflw1 = evt.target }
-                )
-                document.querySelector('[data-trigger="onAutoplace1H"]').addEventListener('click',
-                    (evt) => { grflw1.autoPlace('horizontal', 80, 30, 1000, document.querySelector('[data-id="compunet"]').value) }
-                )
-                document.querySelector('[data-trigger="onAutoplace1V"]').addEventListener('click',
-                    (evt) => { grflw1.autoPlace('vertical', 80, 30, 1000, document.querySelector('[data-id="compunet"]').value) }
-                )
-
-                let grflw2 = document.querySelector('bz-graflow.eic')
-                grflw2.addEventListener('subflowLoaded',
-                    (evt) => { grflw2 = evt.detail.subflow }
-                )
-                grflw2.addEventListener('subflowExited',
-                    (evt) => { grflw2 = evt.target }
-                )
-                document.querySelector('[data-trigger="onAutoplace2H"]').addEventListener('click',
-                    (evt) => { grflw2.autoPlace('horizontal', 100, 30, 1000, document.querySelector('[data-id="eic"]').value) }
-                )
-                document.querySelector('[data-trigger="onAutoplace2V"]').addEventListener('click',
-                    (evt) => { grflw2.autoPlace('vertical', 80, 80, 1000, document.querySelector('[data-id="eic"]').value) }
-                )         
-
-                let grflw3 = document.querySelector('bz-graflow.organi')
-                grflw3.addEventListener('subflowLoaded',
-                    (evt) => { grflw3 = evt.detail.subflow }
-                )
-                grflw3.addEventListener('subflowExited',
-                    (evt) => { grflw3 = evt.target }
-                )
-                document.querySelector('[data-trigger="onAutoplace3H"]').addEventListener('click',
-                    (evt) => { grflw3.autoPlace('horizontal', 80, 80, 1000, document.querySelector('[data-id="organi"]').value) }
-                )
-                document.querySelector('[data-trigger="onAutoplace3V"]').addEventListener('click',
-                    (evt) => { grflw3.autoPlace('vertical', 80, 30, 1000, document.querySelector('[data-id="organi"]').value) }
-                )                
-
-                let grflw4 = document.querySelector('bz-graflow.icmp')
-                grflw4.addEventListener('subflowLoaded',
-                    (evt) => { grflw4 = evt.detail.subflow }
-                )
-                grflw4.addEventListener('subflowExited',
-                    (evt) => { grflw4 = evt.target }
-                )
-                document.querySelector('[data-trigger="onAutoplace4H"]').addEventListener('click',
-                    (evt) => { grflw4.autoPlace('horizontal', 100, 30, 1000, document.querySelector('[data-id="icmp"]').value) }
-                )
-                document.querySelector('[data-trigger="onAutoplace4V"]').addEventListener('click',
-                    (evt) => { grflw4.autoPlace('vertical', 80, 80, 1000, document.querySelector('[data-id="icmp"]').value) }
-                )
-
-                document.querySelector('input[data-id="compunet"]').addEventListener('change',
-                    (evt) => { grflw1.setAttribute('tension', evt.target.value); grflw1.refresh() }
-                )
-                document.querySelector('input[data-id="eic"]').addEventListener('change',
-                    (evt) => { grflw2.setAttribute('tension', evt.target.value); grflw2.refresh() }
-                )
-                document.querySelector('input[data-id="organi"]').addEventListener('change',
-                    (evt) => { grflw3.setAttribute('tension', evt.target.value); grflw3.refresh() }
-                )
-
-                document.querySelector('input[data-id="icmp"]').addEventListener('change',
-                    (evt) => { grflw4.setAttribute('tension', evt.target.value); grflw4.refresh() }
-                )
-            })
-        </script>
 	</head>
 
 	<body>
-        <bz-graflow class="compunet" flow="/app/assets/json/bzGraflow/testFlow1.json" tension="60" isolated>
-            <div class="demooptions"> <!-- just for demo purposes -->
-                <button data-trigger="onAutoplace1H">Auto-place Horizontal</button>
-                <button data-trigger="onAutoplace1V">Auto-place Vertical</button>
-                <select name="align" data-id="compunet">
-                    <option value="center">Center</option>
-                    <option value="first">First</option>
-                    <option value="last">Last</option>
-                    <option value="auto">Auto</option>
-                </select>
-                <div class-"cols-2"=""><label>tension</label><input data-id="compunet" type="number" size="2" value="60"></div>
-            </div>
-        </bz-graflow>
-
-        <bz-graflow class="eic" flow="/app/assets/json/bzGraflow/testFlowEic.json" tension="60">
-            <div class="demooptions"> <!-- just for demo purposes -->
-                <button data-trigger="onAutoplace2H">Auto-place Horizontal</button>
-                <button data-trigger="onAutoplace2V">Auto-place Vertical</button>
-                <select name="align" data-id="eic">
-                    <option value="center">Center</option>
-                    <option value="first">First</option>
-                    <option value="last">Last</option>
-                    <option value="auto">Auto</option>
-                </select>
-                <div class-"cols-2"=""><label>tension</label><input data-id="eic" type="number" size="2" value="60"></div>
-            </div>
-        </bz-graflow>
-
-        <bz-graflow class="organi" flow="/app/assets/json/bzGraflow/testFlow2.json" tension="60" isolated>
-            <div class="demooptions">
-                <button data-trigger="onAutoplace3H">Auto-place Horizontal</button> 
-                <button data-trigger="onAutoplace3V">Auto-place Vertical</button>
-                <select name="align" data-id="organi">
-                    <option value="center">Center</option>
-                    <option value="first">First</option>
-                    <option value="last">Last</option>
-                    <option value="auto">Auto</option>
-                </select>
-                <div class-"cols-2"=""><label>tension</label><input data-id="organi" type="number" size="2" value="60"></div>
-            </div>
-        </bz-graflow>
-
-
-        <bz-graflow class="icmp" flow="/app/assets/json/bzGraflow/testFlowICMP.json" tension="60">
-            <div class="demooptions"> <!-- just for demo purposes -->
-                <button data-trigger="onAutoplace4H">Auto-place Horizontal</button>
-                <button data-trigger="onAutoplace4V">Auto-place Vertical</button>
-                <select name="align" data-id="icmp">
-                    <option value="center">Center</option>
-                    <option value="first">First</option>
-                    <option value="last">Last</option>
-                    <option value="auto">Auto</option>
-                </select>
-                <div class-"cols-2"=""><label>tension</label><input data-id="icmp" type="number" size="2" value="60"></div>
-            </div>
-        </bz-graflow>
-
+        <ul>
+            <li><a href="./test1.html">test1 (P42 graph + 2 depths subflows)</a></li>
+            <li><a href="./test2.html">test2 (organigram)</a></li>
+            <li><a href="./test3.html">test3 (EIC simple + subflow)</a></li>
+            <li><a href="./test4.html">test4 (EIC-ICMP)</a></li>
+        </ul>
 	</body>
 </html>
diff --git a/app/assets/html/test1.html b/app/assets/html/test1.html
new file mode 100644
index 0000000..d2137a1
--- /dev/null
+++ b/app/assets/html/test1.html
@@ -0,0 +1,92 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>graflow</title>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+		<link type="text/css" rel="stylesheet" href="/app/thirdparty/eicui/eicui-2.0.css">
+        <link type="text/css" rel="stylesheet" href="../../thirdparty/buildoz/buildoz.css">
+        <script src="../../thirdparty/buildoz/buildoz.js"></script>      
+        <script src="../../thirdparty/buildoz/bzGraflow.js"></script>
+        <style>
+            @font-face { /*FF does not indirectly load if inside a shawdow-dom */
+                font-family: 'glyphs';
+                src:  url('/app/assets/styles/fonts/glyphs.eot');
+                src:  url('/app/assets/styles/fonts/glyphs.eot') format('embedded-opentype'),
+                    url('/app/assets/styles/fonts/glyphs.ttf') format('truetype'),
+                    url('/app/assets/styles/fonts/glyphs.woff') format('woff'),
+                    url('/app/assets/styles/fonts/glyphs.svg') format('svg');
+                font-weight: normal;
+                font-style: normal;
+                font-display: block;
+            }
+            body{
+                display: grid;
+                grid-gap: 5px;
+                background:#888; 
+                font-size: 16px;
+            }
+            .demooptions{
+                padding: 2px;
+                position: absolute;
+                top: 2px;
+                right: 2px;
+                width: 10em;
+                background: #FFFB;
+                border-radius: 5px;
+                text-align: center;
+                z-index:99;
+                font-size: .7em;
+                border: 1px solid #999;
+            }
+            .demooptions button{
+                text-transform: none;
+                margin: 2px;
+                font-size: 1em;
+            }            
+            bz-graflow{
+                overflow: scroll;
+                border: 2px solid black;
+            }
+            bz-graflow.compunet{ grid-column: 1 / -1; width: 100vw; height: 60vh; background:black; }
+          </style>
+        <script>
+            window.addEventListener('load',()=>{
+                let grflw1 = document.querySelector('bz-graflow.compunet')
+                grflw1.addEventListener('subflowLoaded',
+                    (evt) => { grflw1 = evt.detail.subflow }
+                )
+                grflw1.addEventListener('subflowExited',
+                    (evt) => { grflw1 = evt.target }
+                )
+                document.querySelector('[data-trigger="onAutoplace1H"]').addEventListener('click',
+                    (evt) => { grflw1.autoPlace('horizontal', 80, 30, 1000, document.querySelector('[data-id="compunet"]').value) }
+                )
+                document.querySelector('[data-trigger="onAutoplace1V"]').addEventListener('click',
+                    (evt) => { grflw1.autoPlace('vertical', 80, 30, 1000, document.querySelector('[data-id="compunet"]').value) }
+                )
+
+                document.querySelector('input[data-id="compunet"]').addEventListener('change',
+                    (evt) => { grflw1.setAttribute('tension', evt.target.value); grflw1.refresh() }
+                )
+            })
+        </script>
+	</head>
+
+	<body>
+        <bz-graflow class="compunet" flow="/app/assets/json/bzGraflow/testFlow1.json" tension="60" isolated>
+            <div class="demooptions"> <!-- just for demo purposes -->
+                <button data-trigger="onAutoplace1H">Auto-place Horizontal</button>
+                <button data-trigger="onAutoplace1V">Auto-place Vertical</button>
+                <select name="align" data-id="compunet">
+                    <option value="center">Center</option>
+                    <option value="first">First</option>
+                    <option value="last">Last</option>
+                    <option value="auto">Auto</option>
+                </select>
+                <div class-"cols-2"=""><label>tension</label><input data-id="compunet" type="number" size="2" value="60"></div>
+            </div>
+        </bz-graflow>
+
+	</body>
+</html>
diff --git a/app/assets/html/test2.html b/app/assets/html/test2.html
new file mode 100644
index 0000000..f15230f
--- /dev/null
+++ b/app/assets/html/test2.html
@@ -0,0 +1,92 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>graflow</title>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+		<link type="text/css" rel="stylesheet" href="/app/thirdparty/eicui/eicui-2.0.css">
+        <link type="text/css" rel="stylesheet" href="../../thirdparty/buildoz/buildoz.css">
+        <script src="../../thirdparty/buildoz/buildoz.js"></script>      
+        <script src="../../thirdparty/buildoz/bzGraflow.js"></script>
+        <style>
+            @font-face { /*FF does not indirectly load if inside a shawdow-dom */
+                font-family: 'glyphs';
+                src:  url('/app/assets/styles/fonts/glyphs.eot');
+                src:  url('/app/assets/styles/fonts/glyphs.eot') format('embedded-opentype'),
+                    url('/app/assets/styles/fonts/glyphs.ttf') format('truetype'),
+                    url('/app/assets/styles/fonts/glyphs.woff') format('woff'),
+                    url('/app/assets/styles/fonts/glyphs.svg') format('svg');
+                font-weight: normal;
+                font-style: normal;
+                font-display: block;
+            }
+            body{
+                display: grid;
+                grid-gap: 5px;
+                background:#888; 
+                font-size: 16px;
+            }
+            .demooptions{
+                padding: 2px;
+                position: absolute;
+                top: 2px;
+                right: 2px;
+                width: 10em;
+                background: #FFFB;
+                border-radius: 5px;
+                text-align: center;
+                z-index:99;
+                font-size: .7em;
+                border: 1px solid #999;
+            }
+            .demooptions button{
+                text-transform: none;
+                margin: 2px;
+                font-size: 1em;
+            }            
+            bz-graflow{
+                overflow: scroll;
+                border: 2px solid black;
+            }
+            bz-graflow.organi{ width: 40vw; height: 100vh; background:black; }
+          </style>
+        <script>
+            window.addEventListener('load',()=>{
+                let grflw3 = document.querySelector('bz-graflow.organi')
+                grflw3.addEventListener('subflowLoaded',
+                    (evt) => { grflw3 = evt.detail.subflow }
+                )
+                grflw3.addEventListener('subflowExited',
+                    (evt) => { grflw3 = evt.target }
+                )
+                document.querySelector('[data-trigger="onAutoplace3H"]').addEventListener('click',
+                    (evt) => { grflw3.autoPlace('horizontal', 80, 80, 1000, document.querySelector('[data-id="organi"]').value) }
+                )
+                document.querySelector('[data-trigger="onAutoplace3V"]').addEventListener('click',
+                    (evt) => { grflw3.autoPlace('vertical', 80, 30, 1000, document.querySelector('[data-id="organi"]').value) }
+                )                
+
+                document.querySelector('input[data-id="organi"]').addEventListener('change',
+                    (evt) => { grflw3.setAttribute('tension', evt.target.value); grflw3.refresh() }
+                )
+            })
+        </script>
+	</head>
+
+	<body>
+        <bz-graflow class="organi" flow="/app/assets/json/bzGraflow/testFlow2.json" tension="60" isolated>
+            <div class="demooptions">
+                <button data-trigger="onAutoplace3H">Auto-place Horizontal</button> 
+                <button data-trigger="onAutoplace3V">Auto-place Vertical</button>
+                <select name="align" data-id="organi">
+                    <option value="center">Center</option>
+                    <option value="first">First</option>
+                    <option value="last">Last</option>
+                    <option value="auto">Auto</option>
+                </select>
+                <div class-"cols-2"=""><label>tension</label><input data-id="organi" type="number" size="2" value="60"></div>
+            </div>
+        </bz-graflow>
+
+	</body>
+</html>
diff --git a/app/assets/html/test3.html b/app/assets/html/test3.html
new file mode 100644
index 0000000..ed1bf0f
--- /dev/null
+++ b/app/assets/html/test3.html
@@ -0,0 +1,90 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>graflow</title>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+		<link type="text/css" rel="stylesheet" href="/app/thirdparty/eicui/eicui-2.0.css">
+        <link type="text/css" rel="stylesheet" href="../../thirdparty/buildoz/buildoz.css">
+        <script src="../../thirdparty/buildoz/buildoz.js"></script>      
+        <script src="../../thirdparty/buildoz/bzGraflow.js"></script>
+        <style>
+            @font-face { /*FF does not indirectly load if inside a shawdow-dom */
+                font-family: 'glyphs';
+                src:  url('/app/assets/styles/fonts/glyphs.eot');
+                src:  url('/app/assets/styles/fonts/glyphs.eot') format('embedded-opentype'),
+                    url('/app/assets/styles/fonts/glyphs.ttf') format('truetype'),
+                    url('/app/assets/styles/fonts/glyphs.woff') format('woff'),
+                    url('/app/assets/styles/fonts/glyphs.svg') format('svg');
+                font-weight: normal;
+                font-style: normal;
+                font-display: block;
+            }
+            body{
+                display: grid;
+                grid-gap: 5px;
+                background:#888; 
+                font-size: 16px;
+            }
+            .demooptions{
+                padding: 2px;
+                position: absolute;
+                top: 2px;
+                right: 2px;
+                width: 10em;
+                background: #FFFB;
+                border-radius: 5px;
+                text-align: center;
+                z-index:99;
+                font-size: .7em;
+                border: 1px solid #999;
+            }
+            .demooptions button{
+                text-transform: none;
+                margin: 2px;
+                font-size: 1em;
+            }            
+            bz-graflow{
+                overflow: scroll;
+                border: 2px solid black;
+            }
+            bz-graflow.eic{ grid-column: 1 / -1; width: 80vw; height: 60vh; background: var(--eicui-base-color-grey-10); }
+          </style>
+        <script>
+            window.addEventListener('load',()=>{
+                let grflw2 = document.querySelector('bz-graflow.eic')
+                grflw2.addEventListener('subflowLoaded',
+                    (evt) => { grflw2 = evt.detail.subflow }
+                )
+                grflw2.addEventListener('subflowExited',
+                    (evt) => { grflw2 = evt.target }
+                )
+                document.querySelector('[data-trigger="onAutoplace2H"]').addEventListener('click',
+                    (evt) => { grflw2.autoPlace('horizontal', 100, 30, 1000, document.querySelector('[data-id="eic"]').value) }
+                )
+                document.querySelector('[data-trigger="onAutoplace2V"]').addEventListener('click',
+                    (evt) => { grflw2.autoPlace('vertical', 80, 80, 1000, document.querySelector('[data-id="eic"]').value) }
+                )         
+                document.querySelector('input[data-id="eic"]').addEventListener('change',
+                    (evt) => { grflw2.setAttribute('tension', evt.target.value); grflw2.refresh() }
+                )
+            })
+        </script>
+	</head>
+
+	<body>
+        <bz-graflow class="eic" flow="/app/assets/json/bzGraflow/testFlowEic.json" tension="60">
+            <div class="demooptions"> <!-- just for demo purposes -->
+                <button data-trigger="onAutoplace2H">Auto-place Horizontal</button>
+                <button data-trigger="onAutoplace2V">Auto-place Vertical</button>
+                <select name="align" data-id="eic">
+                    <option value="center">Center</option>
+                    <option value="first">First</option>
+                    <option value="last">Last</option>
+                    <option value="auto">Auto</option>
+                </select>
+                <div class-"cols-2"=""><label>tension</label><input data-id="eic" type="number" size="2" value="60"></div>
+            </div>
+        </bz-graflow>
+	</body>
+</html>
diff --git a/app/assets/html/test4.html b/app/assets/html/test4.html
new file mode 100644
index 0000000..c0c5014
--- /dev/null
+++ b/app/assets/html/test4.html
@@ -0,0 +1,91 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<title>graflow</title>
+		<meta charset="utf-8">
+		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
+		<link type="text/css" rel="stylesheet" href="/app/thirdparty/eicui/eicui-2.0.css">
+        <link type="text/css" rel="stylesheet" href="../../thirdparty/buildoz/buildoz.css">
+        <script src="../../thirdparty/buildoz/buildoz.js"></script>      
+        <script src="../../thirdparty/buildoz/bzGraflow.js"></script>
+        <style>
+            @font-face { /*FF does not indirectly load if inside a shawdow-dom */
+                font-family: 'glyphs';
+                src:  url('/app/assets/styles/fonts/glyphs.eot');
+                src:  url('/app/assets/styles/fonts/glyphs.eot') format('embedded-opentype'),
+                    url('/app/assets/styles/fonts/glyphs.ttf') format('truetype'),
+                    url('/app/assets/styles/fonts/glyphs.woff') format('woff'),
+                    url('/app/assets/styles/fonts/glyphs.svg') format('svg');
+                font-weight: normal;
+                font-style: normal;
+                font-display: block;
+            }
+            body{
+                display: grid;
+                grid-gap: 5px;
+                background:#888; 
+                font-size: 16px;
+            }
+            .demooptions{
+                padding: 2px;
+                position: absolute;
+                top: 2px;
+                right: 2px;
+                width: 10em;
+                background: #FFFB;
+                border-radius: 5px;
+                text-align: center;
+                z-index:99;
+                font-size: .7em;
+                border: 1px solid #999;
+            }
+            .demooptions button{
+                text-transform: none;
+                margin: 2px;
+                font-size: 1em;
+            }            
+            bz-graflow{
+                overflow: scroll;
+                border: 2px solid black;
+            }
+            bz-graflow.icmp{ grid-column: 1 / -1; width: 100vw; height: 80vh; background: var(--eicui-base-color-grey-10); }
+          </style>
+        <script>
+            window.addEventListener('load',()=>{
+                let grflw4 = document.querySelector('bz-graflow.icmp')
+                grflw4.addEventListener('subflowLoaded',
+                    (evt) => { grflw4 = evt.detail.subflow }
+                )
+                grflw4.addEventListener('subflowExited',
+                    (evt) => { grflw4 = evt.target }
+                )
+                document.querySelector('[data-trigger="onAutoplace4H"]').addEventListener('click',
+                    (evt) => { grflw4.autoPlace('horizontal', 100, 30, 1000, document.querySelector('[data-id="icmp"]').value) }
+                )
+                document.querySelector('[data-trigger="onAutoplace4V"]').addEventListener('click',
+                    (evt) => { grflw4.autoPlace('vertical', 80, 80, 1000, document.querySelector('[data-id="icmp"]').value) }
+                )
+
+                document.querySelector('input[data-id="icmp"]').addEventListener('change',
+                    (evt) => { grflw4.setAttribute('tension', evt.target.value); grflw4.refresh() }
+                )
+            })
+        </script>
+	</head>
+
+	<body>
+        <bz-graflow class="icmp" flow="/app/assets/json/bzGraflow/testFlowICMP.json" tension="60">
+            <div class="demooptions"> <!-- just for demo purposes -->
+                <button data-trigger="onAutoplace4H">Auto-place Horizontal</button>
+                <button data-trigger="onAutoplace4V">Auto-place Vertical</button>
+                <select name="align" data-id="icmp">
+                    <option value="center">Center</option>
+                    <option value="first">First</option>
+                    <option value="last">Last</option>
+                    <option value="auto">Auto</option>
+                </select>
+                <div class-"cols-2"=""><label>tension</label><input data-id="icmp" type="number" size="2" value="60"></div>
+            </div>
+        </bz-graflow>
+	</body>
+</html>
diff --git a/app/thirdparty/buildoz/bzGraflow.js b/app/thirdparty/buildoz/bzGraflow.js
index 3c06e67..b7f7176 100644
--- a/app/thirdparty/buildoz/bzGraflow.js
+++ b/app/thirdparty/buildoz/bzGraflow.js
@@ -143,18 +143,27 @@ class BZgraflow extends Buildoz{
             }
         }
 
-        // Now load styles (once)
+        // Now load styles
         const isIsolated = this.hasAttribute('isolated')
-        if(isIsolated || !BZgraflow._loadedNodeStyles.has(url)) { 
-            const styles = doc.querySelectorAll('style')
+        const styles = doc.querySelectorAll('style')
+        if(isIsolated) {
+            // Shadow DOM: styles are per-instance
             styles.forEach(styleEl => {
                 const style = document.createElement('style')
                 style.textContent = styleEl.textContent
                 this.mainContainer.appendChild(style)
             })
-            // In non-isolated (light DOM) mode, styles apply globally so we can de-dupe across instances.
-            // In isolated (shadow DOM) mode, styles must be injected per instance.
-            if(!isIsolated) BZgraflow._loadedNodeStyles.add(url)
+        } else {
+            // Light DOM: inject into document.head once per nodesFile url
+            if(!BZgraflow._loadedNodeStyles.has(url)) {
+                styles.forEach(styleEl => {
+                    const style = document.createElement('style')
+                    style.textContent = styleEl.textContent
+                    style.dataset.bzgfNodesStyle = url
+                    document.head.appendChild(style)
+                })
+                BZgraflow._loadedNodeStyles.add(url)
+            }
         }
         this.dispatchEvent(new CustomEvent('nodesLoaded', {
             detail: { url },
@@ -302,6 +311,9 @@ class BZgraflow extends Buildoz{
         if(pos === 'static') oldEl.style.position = 'relative'
         newEl.style.position = 'absolute'
         newEl.style.inset = '0'
+        // Override bz-graflow's default width/height (100vw/50vh) when used as an embedded overlay
+        newEl.style.width = '100%'
+        newEl.style.height = '100%'
         newEl.style.display = 'block'
         oldEl.appendChild(newEl)
     }