[Bug]: Frameless Mica windows animate and jiggle when shown

[mitchchn]

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

29.1.5

What operating system are you using?

Windows

Operating System Version

Windows 11 23H2

What arch are you using?

x64

Last Known Working Electron version

No response

Expected Behavior

A hidden window should appear instantly without any kind of animation when it is shown with window.show().

Actual Behavior

A window with these properties:

backgroundMaterial: "mica",
titlebarStyle: "hidden"

Will always animate when shown, as if it were opening for the first time, causing the already-rendered contents to jiggle around.

Testcase Gist URL

https://gist.github.com/bcabb1d9179ef9a0e0d42aec06ce7d97

Additional Information

No response