Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Electron Version

12.x 13.x

What operating system are you using?

macOS

Operating System Version

macOS Big Sur 11.2.2

What arch are you using?

arm64 (including Apple Silicon)

Last Known Working Electron version

12.x

Expected Behavior

BrowserView with non-zero y bound setting should not being able to drag in the bottom area.

Actual Behavior

If set BrowserView with bounds { x: 0, y: 40, width: 300, height: 100 }.
This BrowserView will has a hidden dragging-area in its bottom.
Problem occurred while the y is non-zero.

Testcase Gist URL

https://gist.github.com/c138020abbb7d949608c3c11b1cad253

As in #27884, the dragging problem in BrowserView still exists.
Have tested in v12.x and v13.x.
The dragging area is actually 2x of the BrowserView's y setting (red area in test case).