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 bug report that matches the one I want to file, without success.

Electron Version

40.6.0

What operating system(s) are you using?

macOS

Operating System Version

26.2 (25C56)

What arch are you using?

arm64 (including Apple Silicon)

Last Known Working Electron version

No response

Does the issue also appear in Chromium / Google Chrome?

No

Expected Behavior

The developer tools window is resizable.

Actual Behavior

The developer tools window is not resizable.

Testcase Gist URL

No response

Additional Information

This appears to be a regression related to #49780 and #49391.