This has been posted elsewhere, but definitely deserves to be in the bug section.

The new claiming system causes the game to fail to understand whether or not you are actually in combat, when multiple enemies are being fought. I and others have experienced this in the Beastman strongholds; surrounded by many mobs, flailing away at them, and your TP is CONSTANTLY draining. At first I thought it was some debuff the beastmen were dropping on us, but there was no icon or anything. It makes it extremely difficult to complete the battles.