Here's a link to a copy of the world in the video I uploaded:
Ampolive, I can't show the F3 screen when the crash occurs because the crash occurs before the world opens.
I've added a video of the crash occurring to the ticket.
The bug still exists in 1.16.2
That's really disappointing...I hope horse armor gets updated soon so that this would work.
I pressed F3 + C for 10 seconds in a new world I created and attached the crash report to the ticket.