musescore / musescore/MuseScore

Crash dragging system markings in Layout panel

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crash P0 regression MS4 UX/interaction
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Description

Issue type

Crash or freeze

Description with steps to reproduce

In a score with at least three instruments and three system marking positions:

  • Attempt to drag any but the lowest of the system markings to below the lowest staff.
    RESULT: Crash
Supporting files, videos and screenshots

https://github.com/user-attachments/assets/2f9abd84-9c14-4042-83d1-4881745eb7e8

In which versions of MuseScore Studio is this issue present?

4.6.0 - lastest nightlies

Regression

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

Operating system

Ubuntu 24.04.4 LTS.

Additional context

No response

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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First steps

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Assessment

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