Removing Instrument Name in Staff/Part Properties changes clef from Bass to Treble

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

Removing Instrument Name in Staff/Part Properties changes clef from Bass to Treble

I have a piano duet score with the second instrument only showing the bass part.

I need to hide the instrument name (the whole score if for piano only, so it's redundant).

1. Right click the second instrument.
2. Select the Staff/Part Properties pop-up dialog
3. Clear the Long and / or Short Instrument Name
4. Click Apply
   Observe:

• the instrument clef changes from bass to treble and moves down one octave.
  

Note: if you do the same clearing of instrument name in the Instruments panel, there is no issue.

Supporting files, videos and screenshots

https://github.com/user-attachments/assets/7499a89e-19ef-4157-b519-938a09988165

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

OS: Windows 10 Version 2009 or later, Arch.: x86_64, MuseScore Studio version (64-bit): 4.3.2-241630831, revision: github-musescore-musescore-22b46f2

Regression

No

Operating system

Windows 11

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