this bug is in 0.13.0 build 4, but it didnt let me select 0.13.0

i dont really know how it happens, i think you just craft an item, and some times it turns invisible, but sometimes some of my items turn invisible so i cant see them or or select them. sometimes they appear in my hotbar but not on my inventory screen. i can craft using the invisible items, but i cant see them, or select them until they have been crafted into something else.

i dont know how to make them reappear.