some grab skill is bugged, enemy can get out of CC without animation

Bug Name:

some grab skill is bugged, enemy can get out of CC without animation​

Bug Description:

when Berserker grabs the target, the target can get up before the cc ends(almost instantly).
I am not sure if this has something to do with the target class but we tested on
- grabbing Mystic with Rock Smash， the bug happens almost every time
- grabbing Lahn with Smack Down, the bug happens randomly

This bug also happen to Lahn grab, but I did not have a video record for it.​

How to reproduce/proof:

https://streamable.com/0zawaw​