musescore / musescore/MuseScore
Crash on quit after closing 2 MSS windows (5.0 main)
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@mathesoncalum is already working on this.
Since Jun 16, 2026.
crash
P1
regression nightly
- Dominant language
- C++
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Description
Description with steps to reproduce
- Open new score
- Open another new score in a separate MSS window
- Quit or Ctr+Q (click 'Don't save' in the dialog)
or
- Open score 1
- Make some changes
- Open score 2 in a separate MSS window
- Make some changes
- Quit (Ctr+Q)
Supporting files, videos and screenshots
https://github.com/user-attachments/assets/eff4ed31-fbcc-4916-a8be-94a2d7471021
4f093d77-e3c0-440f-a0d3-e09dd4d7589b.dmp
MuseScoreStudio_260615_173804.log
https://github.com/user-attachments/assets/86b1a5b2-5819-4b62-8880-ab51011fa396
850565cf-3cbc-4dcb-b5ea-6d496af3de33.dmp
MuseScoreStudio_260615_164120.log
MuseScoreStudio_260615_164152.log
In which versions of MuseScore Studio is this issue present?
5.0.0-260615043 (main nightly)
Regression
Yes, this works in the latest released version and is broken in the nightly builds
Doesn't occur in 4.7.3
Operating system
Win10/macOS13.7.8
Additional context
No response
Checklist
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- I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
- I have attached all requested files and information to this report
- I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible
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Assessment
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