My brother and I made a world on beta 1.16 because we wanted to try it out and we left the game after a little bit. I had logged off while still in the nether and I got back through the portal and tried to get into my house. But, when I opened the door, it took a bit to render it as open. I don’t know if this is a known bug or not, but it happened to chests, furnaces, and crafting tables too. The crafting table also showed one of the purple and black blocks where the equal sign or arrow(I don’t know what it is) that shows what the outcome of the recipe would be.