Ever since the update to 1.16.1 my inventory has a bug. In the top 4 selections of the survival inventory, at certain times the items are unavailable to move unless I'm accessing a chest and move it out of my inventory, to the chest and back into my inventory or I drop the items and pick them back up. I tried it with different types of blocks, tools and mob drops and all items are buggy. Will upload a screen shot of affected inventory slots and a possible image showing me highlighting an item however the scroll over text doesn't appear properly showing the items are bugged in my inventory. No loss of items have occurred, however it is inconvenient when trying to move items around in the inventory outside of a chest.