message: Put wrapper container in its own stacking context
diff: @@ -53,8 +53,9 @@ const initDefaultViewport: Viewport = { x: 0, y: 0, zoom: 1 };
  const wrapperStyle: CSSProperties = {
  width: '100%',
  height: '100%',
  - position: 'relative',
  overflow: 'hidden',
  + position: 'relative',
  + zIndex: 0,
  };
  const ReactFlow = forwardRef<ReactFlowRefType, ReactFlowProps>(
  