diff --git a/DocuMentor.wxs b/DocuMentor.wxs
index c358411..855dd21 100644
--- a/DocuMentor.wxs
+++ b/DocuMentor.wxs
@@ -4,7 +4,7 @@
   <!-- Paket-Definition (ersetzt Product in v4) -->
   <Package 
     Name="DocuMentor" 
-    Version="1.2.0"
+    Version="1.2.1"
     Manufacturer="Vitali Graf / Software- und Datenbankentwicklung" 
     UpgradeCode="F498B66C-726D-44AA-95F4-CB4FBDCEF26E"
     Language="1031"
diff --git a/THIRD_PARTY_LICENSES.txt b/THIRD_PARTY_LICENSES.txt
index d37a70c..36c05d1 100644
--- a/THIRD_PARTY_LICENSES.txt
+++ b/THIRD_PARTY_LICENSES.txt
@@ -253,5 +253,5 @@ HINWEISE
 
 ================================================================================
 Stand: März 2026
-Erstellt für: DocuMentor v1.2.0
+Erstellt für: DocuMentor v1.2.1
 ================================================================================
diff --git a/installer.iss b/installer.iss
index 8709f63..da29359 100644
--- a/installer.iss
+++ b/installer.iss
@@ -10,7 +10,7 @@
 ; Build-Befehl: iscc installer.iss
 
 #define MyAppName "DocuMentor"
-#define MyAppVersion "1.2.0"
+#define MyAppVersion "1.2.1"
 #define MyAppPublisher "Ihr Name/Organisation"
 #define MyAppURL "https://github.com/yourusername/xsl-validator"
 #define MyAppExeName "DocuMentor.exe"
diff --git a/pyproject.toml b/pyproject.toml
index f542618..b3a60ce 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "DocuMentor"
-version = "1.2.0"
+version = "1.2.1"
 description = "Professionelle XSL-Transformations-Verwaltung und PDF-Generierung"
 readme = "README.md"
 license = {text = "MIT"}
diff --git a/src/ui/XslDependencyDialog.py b/src/ui/XslDependencyDialog.py
index 483dad9..8e35666 100644
--- a/src/ui/XslDependencyDialog.py
+++ b/src/ui/XslDependencyDialog.py
@@ -760,6 +760,15 @@ class XslDependencyDialog(QDialog):
     var nodesData = {nodes_json};
     var edgesData = {edges_json};
 
+    // Titles von String zu DOM-Elementen konvertieren (vis.js rendert nur DOM-Elemente als HTML)
+    nodesData.forEach(function(node) {{
+        if (node.title) {{
+            var el = document.createElement('div');
+            el.innerHTML = node.title;
+            node.title = el;
+        }}
+    }});
+
     var nodes = new vis.DataSet(nodesData);
     var edges = new vis.DataSet(edgesData);