musescore / musescore/MuseScore

Select All bug after undoing line from beginning to end with parts

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P2 regression MS4 UX/interaction
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Description

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce
  1. Open a score, add a repeat
  2. Open parts
  3. In main score add a line from the beginning to the end of the score
  4. Undo

Selection box only surrounds one or two measures after the repeat

Supporting files, videos and screenshots

https://github.com/user-attachments/assets/d3ee6120-a7d0-4262-9987-7d12002ff647

In which versions of MuseScore Studio is this issue present?

4.5.0

Regression

Yes, this used to work in a previous version of MuseScore 4.x

Operating system

MacOS Tahoe 26.2

Additional context

Issue appears in 4.5.0, does not reproduce in 4.4.4

Issue does not persist after save and re-open
Seems to only happen if parts are open and the line goes from the beginning to the end of the score

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

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Assessment

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