Multi-bar tempo change lines persist in parts even when there are no instruments

[callumjohnspiller]

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

1. Create a tempo change line (rall. rit. accel., etc) by selecting multiple bars, then selecting the line from the palette
2. Open a part-score
3. hide all instruments in the part
4. observe that the multi-bar line persists even though all instruments are hidden (this does not happen with tempo change lines that have been dragged and dropped onto the score)

Supporting files, videos and screenshots

multi-bar.Tempo.change.lines.error.mp4

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

OS: Windows 11 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.4.2-242570931, revision: github-musescore-musescore-3130f97

Regression

I was unable to check

Operating system

Windows 11

Additional context

Recently I had a bit of embarrassment where some rit. + accel. lines were appearing in the part-scores where they were not present in the main score, leading to confusion from players. I think it could be related to this bug, but I haven't been able to reproduce that exact error just yet.

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