I lost all my items because I was dumb enough to try sleeping in the overworld [Compression]
The screenshot has a weird aspect ratio because I was playing splitscreen and forgot to resize the window before taking it
The last backup is from an hour ago, fml
To explain: The world you spawn in in Compression is not the Overworld. It's a trashdump between dimensions, which is why everything is broken, and why beds explode on use, as they would in the Nether or End. (Yes, it also got me when I was trying to sleep in a villager's bed, not thinking hard enough.)
You Died!
I got myself pretty good a ways back when I was making a kind of warpcore-esque thing, with a respawn anchor in the middle, in the overworld. I added the glowstone and then clicked once more unthinkingly. Ow.