Give Command Bug and Rendering Glitch

There is a bug in the give command, in which trying to give yourself or another player an item that doesn't exist while playing on a realm returns "commands.give.notFound". Also, there appears to be texture glitches with Ender Chests, though they don't readily happen. One time, the texture of the block itself did not load while on a realm, and another time the GUI did not load and was invisible.