If the pilot of a Bf 109 was not careful to maintain coordinated flight in a tight turn, the slats on one wing would pop out before the other wing, causing the plane to suddenly jerk in yaw and roll, ruining the pilot's gun solution.
This was a real tactical limitation for 109's. Pilots who were not skilled enough to ensure symmetric slat deployment could not get full turning performance out of the aircraft at low speeds lest they encounter the "snatching" problem.
This would be fun to see in AH, especially if the slats were animated and could be heard making the "bang" sound they supposedly made when extending.