Steps to reproduce:
1. Pick-whip a track matte
2. Do a ctrl-Z
Result:
Track matte remains assigned, no matter how many undos I do. All previous actions "undo" correctly, but the track matte remains in place.
Expected: Track matte assignment should "undo".
System info
Application: After Effects (Beta) v23.1.0.7
OS: Windows v10.0.19044, RAM: 127.92 GB GB, CPUs (logical): 32