Errant repeat count text in custom part with MM rests

[zacjansheski]

Issue type

Engraving bug (incorrect score rendering)

Description with steps to reproduce

1. Open tempate "Sting Quartet"
2. Add notes in the second stave only, add a repeat, repeat count 3x
3. Open custom part, reveal top stave then second stave
4. A secont "3x" appears at the end of adjusted MMrest

Supporting files, videos and screenshots

video1359740215.mp4

In which versions of MuseScore Studio is this issue present?

OS: macOS Tahoe (26.2), Arch.: arm64, MuseScore Studio version (64-bit): 4.7.0-260217043, revision: github-musescore-musescore-64eba24

Regression

No.

Operating system

MacOS Tahoe 26.2

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