I found this bug when checking out the new compost - specifically, standing in the compost and filling it with apples.

I expected that when I pressed F5, it would only look kind of funny because I was half buried in compost.

Instead, I only saw the compost block. When I went out of it, I stayed invisible.

Steps to reproduce:

1. Get out the new Composter block.

2. Stand in it.

3. Fill it with apples.

4. Press F5 and notice that you are invisible.

5. Get out of the composter and see that you are still invisible.

6. Try /effect clear @p and notice the error message.

After finding this bug, I am wandering around this world completely invisible which could be a real problem on multiplayer.

P. S. Your inventory self won't disappear, and your hand won't either.