### Preflight Checklist

- [X] I have read the [Contributing Guidelines](https://github.com/electron/electron/blob/master/CONTRIBUTING.md) for this project.
- [X] I agree to follow the [Code of Conduct](https://github.com/electron/electron/blob/master/CODE_OF_CONDUCT.md) that this project adheres to.
- [X] I have searched the [issue tracker](https://www.github.com/electron/electron/issues) for a feature request that matches the one I want to file, without success.

### Electron Version

12.0.5

### What operating system are you using?

Ubuntu

### Operating System Version

Ubuntu 21.04 x86_64 5.11.0-16-generic

### What arch are you using?

x64

### Last Known Working Electron version

_No response_

### Expected Behavior

All clicking inside the developer tool works well and not being interrupted by dragging the electron app.

### Actual Behavior

When I click the `option` and `close` tool inside the developer tool, it drags the electron app.

https://user-images.githubusercontent.com/61906684/118137437-666fd600-b42f-11eb-9443-ea1ebad1d0ec.mp4



### Testcase Gist URL

_No response_

### Additional Information

This bug only occurs if the dock position is on the left.
shell/browser/api/electron_api_browser_window.h
void BlurWebView();
  bool IsWebViewFocused();
  v8::Local<v8::Value> GetWebContents(v8::Isolate* isolate);
 private:
#if defined(OS_MAC)
  void OverrideNSWindowContentView(InspectableWebContentsView* webView);
#endif
  
  
  void UpdateDraggableRegions(
      const std::vector<mojom::DraggableRegionPtr>& regions);
  
  void ScheduleUnresponsiveEvent(int ms);
  
  void NotifyWindowUnresponsive();
  
  
  base::CancelableRepeatingClosure window_unresponsive_closure_;
#if defined(OS_MAC)
  std::vector<mojom::DraggableRegionPtr> draggable_regions_;
#endif
  v8::Global<v8::Value> web_contents_;
  base::WeakPtr<api::WebContents> api_web_contents_;
  base::WeakPtrFactory<BrowserWindow> weak_factory_{this};
  DISALLOW_COPY_AND_ASSIGN(BrowserWindow);
};
}  
}  
#endif