#62 undo/redo does not work reliable

[Sebastian]

• undo / redo crashes when undoing / redoing replacements
• does not work reliable outside the file editor, occasional strange behaviour when redoing things like drawin / property editor changes. (can't reproduce this right now)

[catonyx]

"undo" can undo too much. Example: make a change in a transition such as edit a line of code, then paste some text, then edit a line incorrectly and hit undo and all these are gone unless save is used in between. Save often. Redo may or may not bring them back.

[Anonymous]

in QM 3.3 you can't undo/redo anything in the property editor. So even if you focus the propertsy editor undo/redo will affect the last cahnges in an editor windows.