So are we never going at address these bugs?
When cleansing a knockup with olaf ult (Namely Vi, easiest to replicate) It will suspend you in the air about 3x longer than the original cc length and youll sit there.
Using a targeted dash on an enemy, and they grab a Thresh lantern in the frames of you exiting the dash (All except Yasuo. Namely Lee Sin, Maokai, etc) will leave you suspended in the air pretty much indefinitely (I don't know the actual length, but it leaves me helpless for about 5 seconds and I die every time)
These bugs have been in the game for like.....forever...