The node connection line is operating abnormally

### Custom Node Testing

- [x] I have tried disabling custom nodes and the issue persists (see [how to disable custom nodes](https://docs.comfy.org/troubleshooting/custom-node-issues#step-1%3A-test-with-all-custom-nodes-disabled) if you need help)

### Expected Behavior

If you click on a blank space, the connection line will be suspended there and you can't operate anything else


### Actual Behavior

If you click on a blank space, the connection line will be suspended there and you can't operate anything else


### Steps to Reproduce

If you click on a blank space, the connection line will be suspended there and you can't operate anything else


### Debug Logs

```powershell
If you click on a blank space, the connection line will be suspended there and you can't operate anything else

```

### Other

_No response_