Error when changing animation of sprite if current direction does not exist

Error when changing animation of custom entity if current direction does not exist:

The sprite of a custom entity "witch" was initialized with direction 2, then I called

custom_entity:get_sprite():set_animation("witch_mixing")

and then I got: Error: Illegal direction 2 for sprite 'npc/witch' in animation 'witch_mixing'.

Since the direction 2 does not exist for the new animation, the direction should be reseted to 0.