Anthony Palmer

I was able to get my pickax to mend at an xp farm I built, however it was extremely slow going compared to the other mending gear I had. However the main issue is the disappearance of my other gear in the chest. It is not the first time this has happened.

I had this same issue. My netherite pickaxe with mending would not mend. All my other gear with mending worked fine and mended properly. So I tried removing all my gear (netherite sword with sharpness V, helmet, chest plate, leggings, and boots. All with mending) into a chest except for my netherite pickaxe. It still would not mend. Then I logged out and back in only to find that my chest plate, leggings, boots, and sword had disappeared from the chest. My netherite helmet was still there.