Deleting a staff type change from the first bar in a piece does not reset its properties

Issue type

Engraving bug (incorrect score rendering)

Description with steps to reproduce

Deleting (or otherwise removing, e.g. with Cut) a Staff type change usually causes its properties to be reset so that the staff reverts to the default (or previous) staff type.

This is not the case when deleting a staff type change at bar 1. This persists through reloading the score, and adding a new staff type change at b.1 shows that its properties have been recalled.

Supporting files, videos and screenshots

https://github.com/user-attachments/assets/eeff2327-d7ea-44d7-8c4f-a89c4a246a3b

Reloading score:

https://github.com/user-attachments/assets/d9f6c70c-f9f6-4d2d-b39c-64d4b49c6060

In which versions of MuseScore Studio is this issue present?

Latest 4.7 nightly

Regression

No.

Operating system

Ubuntu 24.04.4 LTS, Windows 11

Additional context

This bug has presented at least since 4.0.

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