Armorstand rotation updates don't pass through in 1.8->1.9

[FlorianMichael]

/viaversion dump Output

https://dump.viaversion.com/2f0eeff2c6e6203cc5290a1d22593d5f48119898d0ed063200106cfed5c484fa

Console Error

No response

Bug Description

If you spawn an armor stand using packets and only change its yaw (to make the head turn), players between versions 1.9 and 1.9.4 don't see the armor stand rotating. It only rotates if X Y Z changes.

Steps to Reproduce

Do what the bug description says

Expected Behavior

Armor stand should rotate like it does for 1.8 players, probably something in our entity tracker?

Additional Server Info

No response

Checklist

• Via plugins are only running on EITHER the backend servers (e.g. Paper) OR the proxy (e.g. BungeeCord), not on both.
• I have included a ViaVersion dump.
• If applicable, I have included a paste (not a screenshot) of the error.
• I have tried the latest build(s) from https://ci.viaversion.com/ and the issue still persists.

[Barvalg]

Please update all Via* plugins from https://ci.viaversion.com/. In case the issue still persists send the new dump and the issue will be reopened