The dialog for closing an unsaved score is slow

[GrantCRodammmer]

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

1. Create a score
2. Close it
   Takes about a second for the dialog to appear.

Supporting files, videos and screenshots

Screen.Recording.2025-03-08.at.10.44.53.AM.mov

What is the latest version of MuseScore Studio where this issue is present?

4.5 Nightly

Regression

Yes, this works in the latest released version and is broken in the nightly builds

Operating system

macOS 15.3.1

Additional context

This is on an M4 MacBook Pro, so it should be very fast.

Checklist

• This report follows the guidelines for reporting bugs and issues
• 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