Horses with non-player passengers have improper orientation when walking

The bug

Any entity riding a horse causes it to not orientate properly and walk sideways, or even backwards. This is the case with any type of passenger and also affects lightning trap skeletons.

Attatched image shows horse-riding zombie tracking a player. Instead of facing the player, the horse walks towards it sideways.

How to reproduce

/summon horse ~ ~ ~ {Passengers:[{id:husk}],Tame:1b}