Complete Undo

1.4.4 [592] OS X 10.9.4

I had worked on a complex script glyph for almost an hour, approaching completion. I did something I didn’t quite like, so hit Cmd-Z to undo. Much to my extreme dismay, the action undid all of my work back to the bare glyph skeleton.

Any thoughts about why this happened?

This is a quite basic problem but unfortunately I couldn’t find the cause, jet. It is some combination of commands that brake the undo that is usually involved quite a bit later and thus it is difficult to reproduce.

Is there available any kind of debugging software that can be run concurrently with an app to log everything? Maybe this would help to find the problem and solve it. If so, I’m not averse to buying it if the price is reasonable.