Default Generated Parts will sometimes be corrupted (inaccurate music, playback does not align)

Steps to reproduce bug
1. Open score in MuseScore 4.0 (on MacOS)
2. Open Parts menu from top toolbar, or from "File" menu dropdown.
3. Select part and click "Open selected".

Example of corrupted music. Compared to score & duplicated part, music was intermeshed/out of order, additional barlines and repeats were inserted, creating unusable measures, etc.

Workaround:
1. Open score in MuseScore 4.0 (on MacOS)
2. Open Parts menu from top toolbar, or from "File" menu dropdown.
3. Select corrupted part, click "..." and select "Duplicate" option.

Duplicated part will not contain errors, bugs, or playback issues.

Example of correct music in duplicated part.

Additional notes:
-File was originally a MuseScore 3.6 file that was opened in MuseScore 4.0 and saved as a MuseScore 4.0 file.
-While there is a workaround, this is tedious.
-Combined with inability to delete corrupted parts after duplication, managing parts is challenging.