The problem with hats and accessories

[BAHHAPolarlty]

Hello! I apologize in advance if something is not clear, I translate through an online translator. My problem is the following: When I put on a hat, and then put on an accessory, the hat disappears. Or if I put on an accessory, and then put on a hat, the accessory disappears, I can't figure out what the problem is, thank you in advance!