Player model head disappears while wearing skull

Partner Rank: 3
Verification builds: Release 1.10, Beta 1.11.0.8
Summary: When the player is wearing a head (e.g. skeleton skull), the player's head stops rendering.
Use case: In this map, we have remodeled a skull as a mask. Certain entities wear this mask and it looks fine, but when the player wears it, their head disappears. This breaks the intended usage of the item.

Repro Steps:
1. Place a skeleton skull on your head.
2. Open your inventory.
3. Move the mouse to the top of the screen and wiggle it back in forth. You'll be able to see inside the skull, where the player's real head has vanished.

Expected Results: Player's head is still visible underneath skull.

Observed Results: Player's head is gone.

Screenshots/Videos attached: Yes

Notes: As mentioned, this does not affect entities other than the player.