I have encountered recently that after attacking the group of Test Golems in HotM, I managed to go clear across the map and yet still be stuck in combat.
This means I was unable to change my traits, weapons, etc. at all until I joined a match.
Zietlogik [Warrior] Chronologix [Ranger] Ziet The Dreaded [Necromancer] Zietlogic [Revenant]