Issue type

Crash or freeze

Description with steps to reproduce

1. Open MuseScore Studio on Mac.
2. Open or create a score.
3. Create a note and Add text using Cmd+T.
4. Press Option+Right Arrow or Option+Left Arrow repeatedly.
5. The app eventually crashes.

Actual behaviour:
Pressing Option+Right/Left Arrow repeatedly while editing note text eventually causes MuseScore Studio to crash.

Expected behaviour:
Option+Right/Left Arrow should move the cursor word-by-word through the text field without crashing the app.

Version / system info:
OS: macOS Sequoia 15.7.3
Arch.: arm64
MuseScore Studio version 64-bit: 4.6.5-253511702
Revision: github-musescore-musescore-653f38d

Supporting files, videos and screenshots

Musecore Diagnostic File.zip

In which versions of MuseScore Studio is this issue present?

Yes

Regression

I was unable to check

Operating system

macOS Sequoia 15.7.3

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