There was another problem with undo

this is happening with annoying regularity (not strictly regular, but often). I don’t have time to beta test or make screencasts, so please don’t ask me

If you can tell us how we can reproduce it, we can fix it easily.

Are you doing much with global guides?

well, I make a lettershape, and I move some points around.

no, I am doing nothing with global guides

Do you use plugins or scripts?