Undo editing glitch

The app is every good, but theres so many things that could be added to make it better than the other one on the market right now...

But the part that annoys me the most is theres been that bug lately and what it does is it undo the transition and then adds those seconds in your video but still does the transition... pls fix...!

Freestyle Nath about iMovie, v2.2.3