Zed + Superminion bug

posted this a day or two ago, but all my posts from that day disappeared (the boards was freaking out then), so i thought id post it again.

was playing on the rift with zed, and was clearing a super minion wave. When i noticed the super minion stopped moving. It froze in lane wherever i had hit it (don't know if it was a particular ability or not) and would stay there until hit again. This happened in several games, all in bot lane as far as i can remember. I don't know how to reproduce it, but it was a recurring bug.