Let say I am listening (solo) my Drumz1 line and the I add the Cymbal and then Drumz2. Now I have 3 tracks going.
Then I alt click the Cymbal and you got a Solo Cymbal...so far so good.
Then I Alt click the Drumz1: Drumz1=Mute!
It takes another Alt click on the Drumz1 to make it Solo but then if you go again to Alt click Drumz2: Drumz2=Mute
So from going Solo they go Mute after a specific sequence of clicks. The more you add tracks to the Mute/Solo sequence the more it gets off rule. I hope I am not confusing an internal logic that you have built in but then the context menu would act the same way.
If I use the context menu all this does not happen. It actually works as you intended which is correct.
