First-person arm movement upon teleport

Put these two commands in a command block chain set to repeat every tick.

execute as @a[y_rotation=-360..-180] at @s run tp @s ~ ~ ~ ~360 ~

execute as @a[y_rotation=180..360] at @s run tp @s ~ ~ ~ ~-360 ~

 Turn on the chain and look around. Notice how the player arm flicks back into position every so often. There is no jittering effect in f5 mode.