Repro:
Take a Midi track, loop it and play it.
Mute the track
Disable the track whilst muted
Enable the track
The track will remain muted, but the mute button does not show yellow. Could lead to a lot of confusion
Z
This bug effects the mixer too. After disabling a group of tracks and then re-enabling them, I find that sometimes one is silent though nothing appears muted. I think this has something to do with the state of the track before it was disabled.
Z