I was spectating my old hardcore world, and then I deleted it, and tried to load into my hardcore world I recently created, to find myself floating in the void only seeing stars.  

When I take a screenshot of it not paused, it shows that.

There is also a weird hotbar that pops up only when I touch 1, 2, 8, or 9. And it's like a menu that says (1): teleport to player, and (2): teleport to team member. I can't screenshot it for some reason.

This is unlike anything I have ever seen before.

Thanks