This also happened to me on servers in 1.16.X if I was very overclocked with fireworks and turned on the third person front view. The video is attached.
I was also exposed to this error while surviving on snapshot 21w11a.
This is the cutest and funniest bug I've seen.
Duplicate of MC-219849
This also happened to me on servers in 1.16.X if I was very overclocked with fireworks and turned on the third person front view.
The video is attached.