Why is the rotation of wandering traders only updated when they move?

[ruby hollow]

I'm moving an armor stand by constantly teleporting it to a tagged wandering trader but the rotation is not updating unless the position of the wandering trader also changes. After some debugging I found out that the Rotation data value only changes when the mob moves around. Is there a reason for this or am I missing something?

data get entity @e[type=minecraft:wandering_trader,limit=1] Rotation

I'm using this command to move the armor stand around

execute \
    at @e[tag=TAG_LEADER] \
    as @e[tag=TAG_FOLLOWER] \
    if score @s LINK_ID = @e[tag=TAG_LEADER,sort=nearest,limit=1] LINK_ID \
    run tp @s ~ ~ ~ ~ ~

[steel spade]

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[scarlet trench]

That behavior is true of most entities, I believe

You need to somehow update them for the Rotation NBT to visually update. Lots of types of changes will proc an update. I think a common one is enabling and then disabling gravity, but teleporting (or probably the new rotate command) works too

[wheat birch]

will enabling/disabling gravity in the same tick mess things up while it's jumping/falling?

[scarlet trench]

Possibly, I'm not sure

[wheat birch]

toggling the rotation prevents it from looking around it seems 🤔

still moves around fine

I guess I'll randomly make it look at the player some other way then

thanks for the help!