I just started noticing this in 2017.05 update.

Occasionally I will hit CTRL-Z to undo some clip edits, but then it does *not* return to its previous state. It seems to occur mostly with clip stretching.

It's happening enough that I know it's not me or "user error". But not so much that it's unusable. My guess is that undo is failing every 50 clip edits. So if I'm doing a lot of edits in a session then I'll notice it a few times. Luckily I frequently save so I can do a "hard undo".

The problem manifests itself with the edited clip returning in a different state or position. Or the contents of the stretched clip are not in the same position as before.

I've seen this in several projects too, new and old.

Just me so far I guess. I know it doesn't happen to me much and if you're not doing a lot experimentation with editing and undo then you won't see it.

I feel like it's a matter of time before someone else notices.

Otherwise things are really great for me in 2017.05, and Ripple edit is so welcome