I’ve experienced a strange behavior on my AK not too long ago. It also entered an abnormal state out of a sudden and the track mutes behavior was affected. It is described here: AK Permanent track mutes issue - Update on how to fix it!
Long story short, I fixed it by saving the current “corrupted” project. Seems like you’ve done a factory reset, however, if it happens again, you might wanna try saving the project first.