VP20 current build. Open a blank project, add several audio tracks, select all the tracks, right click, select Track Grouping --> Group Selected Tracks.
With the audio tracks now part of a folder/group, if I click the mute button on any individual track within the group, all tracks within the group mute.
Not a desirable behavior. Unless this is the result of some sort of option setting I'm unaware of, this would be a bug.