Loyalty tridents thrown in spectator drop upon collision

The bug

Normally, if a player throws a trident enchanted with loyalty and switches to spectator, the trident entity will despawn in mid air (as it should). The same trident thrown while in spectator will not despawn. However, it will not return to the player either- it just drops itself upon collision with terrain.

This is inconsistent behaviour, even if it's triggered by another bug that shouldn't exist in the first place.