TPing entities to change rotation is broken

Release_478003

Summary:
Attempting to teleport an entity to face a certain direction is broken. The entity will rattle around, ignore the rotation values, and sometimes just turn themselves after the command, despite having a behavior pack that disables their movement. When you TP yourself to that mob to check their rotation, often times you are facing the direction the mob was supposed to be facing, which suggests it's a visual glitch. This was discovered in multiplayer, I haven't checked it in single player. This bug happens when using rotation in the TP command. The mobs seem to entirely ignore the "facing" component in the command.

Impact:
We were attempting to use this effect for visual flair in BLOZARK, and we had to re-work the scene with a different mechanic.

Repro Steps:
1. Create a new world
2. This bug is easier to observe if you have a behavior pack that removes the mob's ability to move. If you can create one, do that. We found the bug on an enderman, but it happens on any mob.
3. Summon the mob you used in your behavior pack.
4. Teleport the mob to a coordinate with a rotational value. Ex: tp @e[type=enderman] 0 70 0 180 0
5. Observe the mob's direction in relation to the direction they should be facing.

Observed results:
The mob either teleports to the facing direction, or they don't. Quite often they don't. Sometimes they will turn themselves after they reach that position.

Expected results:
The mob should be facing the correct direction and stay there.

Screenshots/videos attached:
No