Ninja's CC Chain Not Working

Bug Name:

Ninja's CC Chain Not Working​

Bug Description:

Class: Ninja
Skill Name:: (all of them for example Serpents Ascension > Katana Shower > Vacuum Slash
Skill Level: 65-61
What the skill is doing: Not cc Chaining (floating/Air Knocking)
What is expected of the Skill: cc locking (another air attack/float instead of being immune) Katana shower should be air attacking after a knock down (floating them) as seen in the video on first half.​

How to reproduce/proof:

https://drive.google.com/open?id=1_mx-PJN7OJUf0Qn9F6tQ3EvSqOp2aBbm (Gamez Version With Video from Retail)

(Retail version watch to the full combo of Katana Shower into Vacuum Slash along with slow down the video threw the whole combo, Katana shower still air attacks (floats) them off the ground when there cc'ed.​