Wanted to report the same issue when I found this bug report.
Thought I add this video to the conversation in case it helps in any way:
[media]You can see 2 perspectives of 2 players looking at each other while riding pigs that are constantly being teleported. Recorded on Realms in 1.21.3, can confirm it also happens in singleplayer
Here's the crash report... Sorry
Hi!
The issue is with all of the waypoint command:
[media]waypoint modify <player name> color <color>
waypoint modify <player name> color hex <hex value>
waypoint modify <player name> style set bowtie
In the video you can see me set a color for my waypoint, kill myself, and that the color gets reset. After I do the same for the style with the same result.