Automating Mutes on Group Channels: Bug?

Hey People,
So, Is there a bug in the function of automating mutes on group channels? I have a couple of projects that turned into a bit of a mess because the mutes that I automated on the group channels will irregularly “trip” the mutes on the channels assigned to that particular group but then not UN-mute them when it gets to the next trigger point…so that the group channel un-mutes but the channels do not. Poppycock

one bump