Glitched back to spawn

After updating minecraft I logged into my survival world and appeared at spawn with no items and no levels, as if I had died, even though I had not. Same problem happened on a creative world with keep inventory on, appeared at spawn with no items or levels. This happened more than once on my creative world.

 

I can’t think of anything I did before each glitch that caused it, as the creative world glitched again even though it has been a while since the update, unsure how to recreate it.