(Note: I'm on RTX 1.15.0.9 but that option isn't available in the version drop-down.)

I was killed by the Wither (it wasn't even down to half health yet, if that's relevant), and in an attempt to not lose my inventory, I quickly closed the game from the taskbar. After reopening the game, the Wither was not present and I still had my inventory; however, duplicates of my inventory were scattered on the ground, as if the game had remembered I died, dropped my inventory, but then allowed me to respawn with everything and pick up the stuff I would have lost.