Crash when opening/closing mixer quickly on big score, e.g. Symphony Orchestra template (Master, Windows) #23505
Description
Issue type
Crash or freeze
Bug description
See the title
Steps to reproduce
2024-07-08.11-07-41.mp4
Screenshots/Screen recordings
No response
MuseScore Version
Tested on latest 4.4 master (cff770b)
Regression
Yes, this used to work in MuseScore 4.3.2
Operating system
Win10 (22H2); RAM: 16Go; CPU: Intel Core i5-9300H
Additional context
Found when re-testing #23158 after #23495 (comment).
I couldn't reproduce it in 4.3 (watch the video above).
I hope it isn't a duplicate (I searched in the currently opened issues, but couldn't find one corresponding). Close to #9467 but without requiring playback. EDIT: I just discovered it was equivalent to #13903 which was closed last month.