Sometimes when I try to move an arrow or a stack of arrows (the amount doesn't seem to matter) it "gets stuck" so to speak, and moving it around in my inventory or a chest becomes impossible. In order for this to go away, I need to relog and rejoin the realm (I have only had the glitch occur in realms so far). It has happened in an inventory slot (including hotbar), and in my off-hand inventory slot. I have had multiple stacks of arrows in my inventory when the glitch occurred before, and in this case, only one of the stacks is affected. I think it may have to do with which stack of arrows the game decides to pull from first because it occurs with the off-hand most often.