diff --git a/packages/vyuh_node_flow/lib/src/editor/node_flow_editor_widget_handlers.dart b/packages/vyuh_node_flow/lib/src/editor/node_flow_editor_widget_handlers.dart
index 2a36846..38f6b91 100644
--- a/packages/vyuh_node_flow/lib/src/editor/node_flow_editor_widget_handlers.dart
+++ b/packages/vyuh_node_flow/lib/src/editor/node_flow_editor_widget_handlers.dart
@@ -84,10 +84,8 @@ extension _WidgetGestureHandlers<T, C> on _NodeFlowEditorState<T, C> {
     if (node == null) return;
 
     // Find the port
-    final port = [
-      ...node.inputPorts,
-      ...node.outputPorts,
-    ].where((p) => p.id == portId).firstOrNull;
+    // Use node.ports directly to avoid duplicates when port has PortType.both
+    final port = node.ports.where((p) => p.id == portId).firstOrNull;
     if (port == null) return;
 
     widget.controller.events.port?.onContextMenu?.call(
diff --git a/packages/vyuh_node_flow/lib/src/nodes/node_container.dart b/packages/vyuh_node_flow/lib/src/nodes/node_container.dart
index a7c715a..edfaac9 100644
--- a/packages/vyuh_node_flow/lib/src/nodes/node_container.dart
+++ b/packages/vyuh_node_flow/lib/src/nodes/node_container.dart
@@ -181,19 +181,11 @@ class NodeContainer<T> extends StatelessWidget {
                   ),
                 ),
 
-                // Input ports (only when LOD allows and ports exist)
-                // Use port.isOutput to respect PortType (input, output, both)
-                // rather than list membership
-                if (lodVisibility.showPorts && node.inputPorts.isNotEmpty)
-                  ...node.inputPorts.map(
-                    (port) => _buildPort(context, port, port.isOutput),
-                  ),
-
-                // Output ports (only when LOD allows and ports exist)
-                // Use port.isOutput to respect PortType (input, output, both)
-                // rather than list membership
-                if (lodVisibility.showPorts && node.outputPorts.isNotEmpty)
-                  ...node.outputPorts.map(
+                // Ports (only when LOD allows and ports exist)
+                // Iterate over all ports directly to avoid duplicate rendering
+                // when a port has PortType.both (would appear in both inputPorts and outputPorts)
+                if (lodVisibility.showPorts && node.ports.isNotEmpty)
+                  ...node.ports.map(
                     (port) => _buildPort(context, port, port.isOutput),
                   ),