Undo function bug

[Vorpal]

Easy to reproduce this one, probably known but just in case it's not:
(using version 2.0.1.1157)

Change a texture, save and compile map
Edit > Undo the texture change, save and compile map

In game, the undo function was apparently ignored as the wrong one will be displayed. To fix it, make some sort of geometry change to the map (e.g. jiggle a vertex, it can land in its original spot, then save again).

Not a big deal, but could be confusing to new mappers.

[boris]

Problem is still in revision 1250.

[Vorpal]

Works on flats to, so am assuming all non-bsp related undo's will suffer from this.