I know this is an old thread, but it's one of the only ones I've seen mention this issue. I feel like it happens to me CONSTANTLY, and I am currently struggling because I keep failing a mastery test due to being repeatedly sent flying sideways off the map, resulting in running out of time to complete the objective. This glitch has been frustrating me for years, but lately it's hit a new level of frustration, since I've just failed the same mastery test multiple times, for this exact reason.