Grouping and ungrouping in rapid succession causes crash

[HumbleDeer]

Cura Version

5.9.0

Operating System

Windows 11 23H2 bd 22631

Printer

Something else

Reproduction steps

The following is executed in a matter of about one second (or less), and causes a crash:

1. Select all models (CTRL+A)
2. Group all models (CTRL +G`)
3. Ungroup the models (CTRL+SHIFT+G)

This scenario comes up when you group items, center them, and then ungroup them. The centering command (CTRL +R`) does however not impact this crashing behaviour.

Actual results

Cura crashes with an error that indicates the ungrouping command did not wait for some list of items / object when it was still asynchronously generating

Expected results

We expect Cura to gracefully handle any waiting for any lists that need generating.

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cura.log

Additionally, I noticed errors are being reported when data is being offered to/sent to the Qt library (C++). The following errors indicate this:

2025-01-07 02:43:56,986 - WARNING - [MainThread] UM.Qt.QtApplication.__onQmlWarning [448]: file:///C:/Program Files/UltiMaker Cura 5.9.0/share/cura/resources/qml/Menus/RecentFilesMenu.qml:33: TypeError: Passing incompatible arguments to C++ functions from JavaScript is not allowed.

I merely find it curious and interesting to briefly look into.