[Bug]: non-fullscreenable, non-resizable child windows get fullscreened when being shown if the parent window is fullscreened

[pushkin-]

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

26.0.0

What operating system are you using?

macOS

Operating System Version

macOS Ventura 13.2.1

What arch are you using?

arm64 (including Apple Silicon)

Last Known Working Electron version

No response

Expected Behavior

I expect that if a child window that's configured to be non-fullscreenable is shown while the parent window is fullscreened, the child window won't get fullscreened.

Actual Behavior

Child window opens fullscreened for some reason and the main window crashes when the child is closed.

Testcase Gist URL

https://gist.github.com/pushkin-/3b4bcdb219eee85789e95f6d94ec8a92

Additional Information

1. full screen main window
2. click open window
3. notice that child window is fullscreened even though it shouldn't be able to get fullscreen
4. closing the window makes the parent window go black

seems like the invocation of BrowserWindow::show() causes the enter-full-screen event to get emitted for some reason.

Screen.Recording.2023-08-22.at.5.36.43.PM.mov

[pushkin-]

In my actual app, this also seems to affect resizable windows though I haven't been able to repro in a minimal example yet.

[pushkin-]

If I unscreen the child window after it opens (Fn+F), and then close it, I don't get a crash. But also why does Fn+F do anything if fullscreenable is set to false. I can use that same hotkey to return it to fullscreen.

[kyle-w-20230331]

I got the same issue. 😭

[SuperShan0926]

I got the same issue. 😭

so did I