Bugs

I often work in large groups when doing city / building maps. To keep the building layers organized, each floor will be in its own group so I can toggle the group transparency on / off. Anytime I'm working in a group editing in 2k, it tanks performace to the point where it takes 5+ secs to pivot or even place a stamp. The lag gets worse the more you add to the group and the larger the group is.

When a broken map is recovered and the mask is changed and undone, the map reverts to the pre-recovery state. Steps to reproduce Load map. Run recovery. Select the mask tool. Change the mask. Select the undo button. Expected : The mask change should be the only thing that is undone. Actual : The map reverts to the pre-recovered state.