diff --git a/src/components/graph/NodeContextMenu.vue b/src/components/graph/NodeContextMenu.vue
index 8382a43ec..97ee1b9c9 100644
--- a/src/components/graph/NodeContextMenu.vue
+++ b/src/components/graph/NodeContextMenu.vue
@@ -220,6 +220,12 @@ function show(event: MouseEvent) {
     y: screenY / scale - offset[1]
   }
 
+  // Initialize last* values to current transform to prevent updateMenuPosition
+  // from overwriting PrimeVue's flip-adjusted position on the first RAF tick
+  lastScale = scale
+  lastOffsetX = offset[0]
+  lastOffsetY = offset[1]
+
   isOpen.value = true
   contextMenu.value?.show(event)
 }