Tainted Rituals: Chaotic Boils (exploding pustules) animation missing since Dawn of the Hunt

Since Dawn of the Hunt the chaos pustules on the ground during the aforementioned Rituals have been invisible for me, making those Rituals way harder than they should be. You can still faintly see the explosion of the pustules, but the pustules themselves are not visible.

At first I thought that this was a new type of ritual, but I eventually realized that it is just the animation that is missing...

Before Dawn of the Hunt I could see them just fine.

I have the same problem. Hopefully a fix is found soon.
Geforce GTX 970