diff --git a/src/components/FlowEditor/editor/FlowCanvas.tsx b/src/components/FlowEditor/editor/FlowCanvas.tsx
index 2b16f63..5f04fe3 100644
--- a/src/components/FlowEditor/editor/FlowCanvas.tsx
+++ b/src/components/FlowEditor/editor/FlowCanvas.tsx
@@ -1253,7 +1253,7 @@ export const FlowCanvas = forwardRef<FlowCanvasHandle, FlowCanvasProps>(function
   );
 
   React.useEffect(() => {
-    if (!connectingFrom || !dragPos) return;
+    if (!connectingFrom) return;
     const onMove = (e: MouseEvent) => setDragPos({ x: e.clientX, y: e.clientY });
     const onUp = (e: MouseEvent) => {
       const target = e.target as HTMLElement;
@@ -1272,7 +1272,7 @@ export const FlowCanvas = forwardRef<FlowCanvasHandle, FlowCanvasProps>(function
       window.removeEventListener('mousemove', onMove);
       window.removeEventListener('mouseup', onUp);
     };
-  }, [connectingFrom, dragPos]);
+  }, [connectingFrom]);
 
   const handleNodeMouseDown = useCallback(
     (e: React.MouseEvent, nodeId: string) => {
@@ -1410,26 +1410,16 @@ export const FlowCanvas = forwardRef<FlowCanvasHandle, FlowCanvasProps>(function
     []
   );
 
-  const [containerBounds, setContainerBounds] = useState({ left: 0, top: 0 });
-  React.useEffect(() => {
+  /** Immer aktuelle Viewport-Lage (Scroll, Resize, verschobene Panels) — sonst klebt die Verbindungs-Hilfslinie falsch. */
+  const clientToCanvas = useCallback((clientX: number, clientY: number) => {
     const el = containerRef.current;
-    if (!el) return;
-    const update = () => {
-      const r = el.getBoundingClientRect();
-      setContainerBounds({ left: r.left, top: r.top });
+    if (!el) return { x: 0, y: 0 };
+    const r = el.getBoundingClientRect();
+    return {
+      x: (clientX - r.left - panOffset.x) / zoom,
+      y: (clientY - r.top - panOffset.y) / zoom,
     };
-    update();
-    window.addEventListener('resize', update);
-    return () => window.removeEventListener('resize', update);
-  }, []);
-
-  const clientToCanvas = useCallback(
-    (clientX: number, clientY: number) => ({
-      x: (clientX - containerBounds.left - panOffset.x) / zoom,
-      y: (clientY - containerBounds.top - panOffset.y) / zoom,
-    }),
-    [containerBounds, panOffset, zoom]
-  );
+  }, [panOffset, zoom]);
 
   const handleCanvasMouseDown = useCallback(
     (e: React.MouseEvent) => {