MS Basic glissando adds a percussive sound when the target note starts

Issue type

General playback bug

Description with steps to reproduce

Repro:

1. Add a glissando from one note to another for a string instrument (MS Basic)

Expected:

• The transition should be smooth, and there should be no accent / click / blip / pop sound when the target note starts playing

Actual:

• The target note playback starts with some kind of a percussion sound. MuseSounds instrument seem to work perfectly fine, but in MS Basic they just don't really sound like a glissando, but rather like a transition with the second note played as a completely new one, or even by adding some kind of a percussion sound to accent it.

Supporting files, videos and screenshots

glissando.mscz.zip

https://github.com/user-attachments/assets/98192532-6647-4e8f-9818-5852473a25e6

In which versions of MuseScore Studio is this issue present?

4.7.4-260706075, revision: github-musescore-musescore-7688c00

Regression

I was unable to check

Operating system

macOS Tahoe (26.5.2)

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