pretty self explanatory, if you are wearing a hat which is a sellable item in the shop, it will be sold when you do /sell all. This makes it difficult to sell from farms if you are wearing a hat. Not too big of a deal but under the right circumstances someone could accidentally sell a diamond block.

 

support why was it even a thing in the first place vro

 

Guessing that's an essentials bug, only so much we can do in regards to that.

 

Does renaming the hat solve it?

 

I have absolutely no clue, I'll have to check later to see. Good suggestion though.