NPCs are unable to shoot through doors and windows as the fasttrace they do to check if their weapon is strong enough to always seems to trace the level geometry the mover is made of instead of the mover itself.If an animal's valid food choices include itself, which doesn't happen in normal gameplay, the creature will eat itself, take damage and react, then heal from eating itself, eventually eating itself to death.Disabled cleaner bots will still be able to move as the FleeFromPawn code wakes them from the Disabled state.The walker robots are unable to go up tiny curbs due to MaxStepHeight not being increased for them.Birds and rats will attempt to wait for their currently playing animation to finish before they die, causing them to delay and immediately drop dead after a few seconds.