Dynamic markings affect notes that are not supposed to sound anymore

Issue type

General playback bug

Description with steps to reproduce

Repro:

• Enter a relatively long note (half, whole, etc.) of a sustained instrument (strings, winds) with a pianissimo (pp) marking
• Right after it ends, on the next beat (where that note is not supposed to sound anymore), add fortissimo (ff)

Expected:

• The volume of the note that ended is not supposed to change. It's fine if there is some natural tail, but it shouldn't become louder.

Actual:

• The leftovers of the note that is not supposed to play anymore go full fortissimo, and it sounds like a new staccato note.

Notes:

• It makes the playback of the score completely incorrect in such places, and I couldn't figure out a workaround. Sometimes I try adding a small rest, but first, it makes the score wrong (not as intended), and second, it doesn't always fix the issue.
• I am attaching the screen recording with the audio (and the corresponding MuseScore project as well) – I hope it demonstrates the problem clearly.
• This might not be noticed by most people who use MuseScore just for small and simple projects, however, it becomes a really big one when you do a more complex orchestral score where there can be many instruments playing at the same time, and sudden dynamics changes.

Supporting files, videos and screenshots

dynamics issue.mscz.zip

https://github.com/user-attachments/assets/b46dcb33-a9ee-4158-a3a8-2a9ffd4aa114

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