Decided to travel to the world border on my vanilla survival server, got there and found a small desert island covered in monsters. All of them were spinning. It also seemed like their sounds were hyper-sensitive to direction or being rapidly projected from differing locations, but that could just be a side effect of my new headset.
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duplicates 1
Comments 3
At least it's not my headset, then.

Thank you for your report!
We're tracking this issue in MC-177723 and MC-191170, so this ticket is being resolved and linked as a duplicate.
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Duplication of MC-177723 and MC-177725