Items in the hotbar can disappear.

In the survival mode (or in other modes, I didn't check that), items can randomly disappear from the hotbar. In my case, it was a netherite sword. when I tried to select it, it just disappeared. I was playing on a vanilla 1.19.3 version (Probably, it might be caused because of mods that I installed, but I ain't sure it is so because there was just a few performance mods)

I don't think this bug has specific steps to cause it, maybe can just randomly happen in the survival world