No sound preview in 3.x
3.x branch on my local Linux machine no longer has sound playback when inserting notes or traversing a score. Don't want to guess, but if I had to, and since 3.5.2 and below have no related issues , maybe it has something to do with the reverb code changes? Playing the score itself produces sound.
Unless this is intended for some reason, seems to be of severity type: major .