[Legacy client] Abilities showcase bug

I was checking my available champions to play wondering who I should play. I had never tried Elise so I decided to check her champion page out. When I tried to watch the abilities I tried to start the ability showcase but it only resulted in a black screen with no sound.

I backed out of the champ page and went back in and the same thing happened, every ability preview was broken except the ult. I tried to do the same with Caitlyn's champ page but the same happened.

This happens everytime II try to preview the abilities on Elese's champ page, even after restart.

How to produce the bug

Go to the legacy client. Pick Elise from the champions tab on your profile. Go to the abilities and try to preview them.