It stops playback, I get that. It’s not the end of the world. Deleting tracks and moving data around is!
On multiple occasions undo has removed a track then shifted everything down a track. That is in no way a small thing and demands immediate attention. I can’t even select everything and shift them back into place because it converted some of the tracks from MIDI to audio to accommodate the shifted material.
For you guys to say you’ll get to it when you get to it is completely unprofessional. This is a huge bug and not a feature request. I understand people want audio stretching but that needs to wait. This undo button is destructive. please give it the urgent attention it deserves.