I experienced this problem, along with some more buggy behavior, when I updated to r10727. Going back to r10726 seemed to fix all of my problems.
It isn't very easy to pin down, but a lot of the time when I told Mafia to do something, it would either show no signs of doing anything, but lock down buttons as if it was working, or say it successfully finished doing what it was doing, but never return control to me anyway.
At one point it wouldn't let my select any items in the item manager.
I tried to change from the dwarvish war uniform to a custom outfit; it apparently changed properly, but the pieces of the uniform were still displayed on the gear changer tab (which is where I initiated the change). When I hit the change gear button, it changed back to the uniform.
Everything in the relay browser worked just fine.
Changing outfits through the CLI didn't seem to update the gear changer tab. Changing outfits through the relay browser didn't cause the tab to update properly, but changing individual pieces of equipment did.