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Instead of articulating the notes in grace note chords simultaneously, MS4 articulates them as if they were rolled, or perhaps as if indicated to be played one by one from lowest on the staff to highest on the staff. This does not depend on whether you use the basic soundfonts or muse sounds.
Steps to reproduce
Create a score. Instrument choice doesn't seem to matter but this issue definitely occurs on piano
Write a note anywhere in the score
Add a grace note to this note. Doesn't matter what kind.
Make this grace note into a chord by adding intervals on top. Doesn't matter how many, though the effect is more obvious with more notes:
Issue type
General playback bug
Bug description
Instead of articulating the notes in grace note chords simultaneously, MS4 articulates them as if they were rolled, or perhaps as if indicated to be played one by one from lowest on the staff to highest on the staff. This does not depend on whether you use the basic soundfonts or muse sounds.
Steps to reproduce
Screenshots/Screen recordings
(audio export from this image):
https://user-images.githubusercontent.com/110359879/231618685-0bb43eb8-758e-424d-8393-688c6a374ad5.mp4
MuseScore Version
MS 4.0.2-230651546
Regression
Yes, this used to work in Musescore 3.x and now is broken
Operating system
macOS 12.5 (x84)
Additional context
Works fine in my installation of MS3, which is version 3.6.2.548020600.