GetVehiclePedIsIn not return the entity in 2189 build

Client Version : Canary/Production.
FXServer : 3324 (b2189)
Description : I using GetVehiclePedIsIn function on the server side but it does not return the entity.
Repo Code:

 RegisterCommand('getcar', function(source, args)
 	print(GetVehiclePedIsIn(GetPlayerPed(source)))
 end)

It worked in the 2060 build version.

Is b2189 already there?