Flapjack/Lumberjack Zombie visual error

Flapjack Zombie and Deadlift Zombie have this visual bug that has been here since the Seedling build, and it's where there seems to be a missing texture just for the neck and bone arm. Resulting in a white untextured appearance for said assets. (Above is a screenshot of what it looks like in-game)

It's jarring to look at because once you see it, you can't unsee it with how out of place it looks.