Rek'Sai un-burrow knock up glitch

Given that this bug recently reared its head at the LCS, I thought I should share my experience with this delightful creature.

This happened in a Normal Draft Mode 5v5. I am the Varus in the clip. I did try to flash at this time which is what I think might have caused the bug. As you can see in this situation it resulted in a kill for my support and absolutely no damage taken by myself.