Undo action is often broken

During my work with FM (btw. I’m using version 6.5.4b3) I noticed that the undo action is broken quite often. Obviously the undo stack is prone to corruptions. Unfortunately I was not yet able to identity in which situations or scenarios it is going to happen exactly. However, in general it would be very helpful to make this more reliable.

Hi @silverpilot Thanks for the feedback. Of course, this needs to be solid. We thought we had made improvements to the Undo stack in recent releases, so it would be really helpful if you encounter the issue again to let me know how it happened so we can try to reproduce it.