[bug]Mirroring with Z glitch

[RA2lover]

Description
basically, the object clones itself when trying to mirror with ctrl Z(undo).

Reproducibility = Always

Steps to reproduce:
1- make something.
2- select it, and set mirror key to "Z".
3- Start simulation.
4- Do something, in order to take up 3(or more, if you wish) undo saves.
5-Use the Undo shortcut(ctrl+Z) to undo. if it doesn't clone the to-be-mirrored object, repeat another time(after some trying, it looks like it clones once every two undo steps).

Bug criticality = relatively low. I doubt someone is going to stumble upon this problem while trying to make a serious model.

[RA2lover]

bump. no replys had been recieved.

[silok]

Thanks for the report, it has been added to the bug tracker.