Ring of Doom invisible in Ultimatum after going away and coming back

In 10 Floor Ultimatum i had selected the Ring of Doom twice i think (or whatever the big red circle that grows over time was). I was in the room with the 1:30 Timer where you just need to survive. After a ring spawned at the bottom i went up so the ring was out of vision. After coming back down the Ring wasnt there anymore but after a few seconds the same ring exploded, thus killing me.

Unlisted YT video of the bug happening:
https://youtu.be/WyVAzsO6zp8

happened the same to us, but i was helping a friend do the trial of chaos level 43 and i was titan level 71. Other than not possible to evade with my 2700 of health and all resistences capped i could not tank it.

Same here. I also captured a video: https://www.youtube.com/watch?v=zcCjzwnOiIg

This is still happening in 0.2d

Ring of Doom explosion should explode, but it's not on the player's screen and it's explosion is not processed.
When you return to the site of the Ring of Doom, the explosion happens.

This happens with some other explosions too, but i forget which ones.