[Bug]: Monocle + config.monocleMinimizeRest causes KWin to hang when closing transient Dialogs

[bladedvox]

Summary

As in the title, the window manager freezes until you kill the parent process of the window in question.

Doesn't seem to affect File Open/Save dialogs though

Steps to Reproduce

1. Enable the "Monocle: Minimize unfocused windows" setting
2. Open a dialog window (excluding file open/save for some reason)
3. Try closing the window either with the window manager or with internal controls (Apply/Cancel/Ok, whatever)
4. Observe the WM has hung dreadfully

Expected behavior

Dialog should close normally and focus restored to the parent window.

Screenshots

No response

Bismuth version

master

KDE Plasma version

5.21.2

The platform KWin is running on

X11

Additional context

No response