I don't know if anyone has reported it yet but the wondering trader is still losing his llamas and I can use them as if they are wild ones. Obviously, this shouldn't be.
MC-150308
Players can steal and tame trader llamas
Resolved
Works As Intended
2
(Unassigned)
Unconfirmed
Mob behaviour
trader_llama, wandering_trader
Minecraft 1.14
Retrieved
I'm pretty sure this is intended.