Release Candidate 2, June 13 -- and the bug it fixed was not a minor visual glitch. A survival-mode player, in the right underground configuration with the right mob geometry, could be permanently trapped in a hole by the Sulfur Cube. That scenario survived eight snapshots and six pre-releases before a tester found it in Release Candidate 1.

labeled 26.2-rc-2 in the Minecraft Launcher and published on June 12 - addressed two issues Mojang called critical: the Sulfur Cube softlock (MC-308731) and a separate problem where respawning at height limit caused the game to delay placing the player back into the world far longer than intended.

The softlock is a more revealing failure than the patch note lets on. The Sulfur Cube hops around like ...