I was riding a very fast  (but vanilla survival, not spawned by commands or anything) horse  and all the sudden the horse started blinking while I was riding it and when I looked at my game log, the log had spammed "Horse (vehicle of Brevort) moved wrongly" 155 times over the course of about 8 seconds.

I tried attaching the launcher log but it gave an error and I'm not sure if that even is the right file to attach