Warwick sliding off ult?

Sometimes when Warwick ults towards an enemy he spins and does a claw animation but he slides off and doesn't surpress the enemy. No cleanse or qss used to remove the ult it just doesn't land. There is a clip animation where WW freezes for a split second but sadly no ult. In these videos, Warwick's ult did not go off. I also found that Xayah and Quinn were scripting thanks to insanely fast skill spam, my Ekko's W, and their strange evades/movements but they're already reported and it's up to Riot to ban or not. Original: http://imgur.com/Db1nIav Slow-Mo: http://imgur.com/pSCGvEd