Vaal Temple Zotlec bugged in floor

I was fighting Zotlec in the Vaal Temple when he suddenly entered the ground and is now stuck. On the screenshot you can see his hand stuck through the floor.
When I hit the general area there, his boss bar still appears but I deal no damage. Now there is no way for me to finish the Temple and get my rewards for this room (Which is Tier 3).

The image seems to be broken. Here is the link:

https://imgur.com/a/NJ01QLG

same problem

Same issue as https://www.pathofexile.com/forum/view-thread/3893536