Player always faces north while riding new entity

Partner Rank:

2

Partner Team Reporting:

Tetrascape

Verification builds and Platforms:

ver. 1.12.1, Win10

Summary:

Riding a newly created entity with "minecraft:rideable" and "lock_rider_rotation" causes the player to always face in the positive X direction, no matter the direction of the entity the player is riding.

Impact:

This is the only remaining issue before we can submit a map for review.

Repro Steps:

1. Create a new world and apply the BP/RP attached.
2. Spawn a throne
3. Sit on the throne

Observed Results:

The player faces north, no matter the direction of the entity.

Expected Results:

The player should face forward in the same direction that the entity is facing.

Screenshots/Videos attached: Yes/No

Yes, attached is a video of the bug.

Regression Builds:

Unknown

Notes:

If you force another entity to mount the throne (other than a player), it will always face in the correct direction.