[GAMEPLAY] Kayn and Rhaast's voicelines are mixed up

Hello, people. I decided to do some testing with Kayn and Rhaast in PT today (DFT early trasnformations, builds, interactions with other things while in E, Etc...)

I decided to transform to Rhaast this game and he was making the appropriate sounds when I attacked the dummy with my abilities and auto attacks.. Suddenly, it just stops using Rhaast's voicelines for his abilities, instead of the demonic groaning and all, I hear Kayn when I use my Q, W and R. This is demonstrated in the video. I used DFT and spammed attacks on a dummy in order to transform to Rhaast, and I don't think I did anything weird that could've caused the bug..

Also, sometimes, when his voice is not bugged, I hear Kayn's sounds when using Q but the audio is 'demonized' as if it is a corrupted version of the normal Kayn making that noise when he uses the Q. Not sure if it's a bug or not however. I still heard the noises Rhaast makes every once in a while when he uses the Q but.. Just to be sure.

EDIT: He makes Kayn's noises when using his basic attacks as well. Forgot to mention that