Crash when dragging tie while no grip is selected

[cbjeukendrup]

Issue type

Crash or freeze

Description with steps to reproduce

1. Select tie
2. Click it again, so that the tie itself is selected, but no grip is selected
3. Drag it -> 💥

Supporting files, videos and screenshots

Schermopname.2025-09-09.om.21.00.39.mov

(first shows the case when the middle grip is selected, which works fine; then the case where no grip is selected, which causes a crash.)

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

4.6/4.7

Regression

Yes, this works in the latest released version and is broken in the nightly builds

Operating system

*

Additional context

Regression in the sense that in 4.5 it seems impossible to reach this state where no grip is selected

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