Sustained note changing dynamic on playback, piano instrument. Musescore 4.0

Note: this mscz file was created on Musescore 3.6 then opened in Musescore 4.0, if it means anything.

Steps to reproduce:
1. Open the .mscz file provided
2. Select the first note on the 58-th measure, then start playback
3. Observe the first sustained chord on 59-th measure, and the sudden dynamic change of the already played & sustained chord

Expectation:
- The sustained chord's dynamic should stay at mf, while new notes played after that on 59-th measure are played on p dynamic

OS: Windows 10 Version 2009, Arch.: x86_64, MuseScore version (64-bit): 4.0.0-223472200, revision: 5485621