Java Edition 1.18 Pre-release 6

1.18 Pre-release 6 (known as 1.18-pre6 in the launcher) is the sixth pre-release for Java Edition 1.18, released on November 22, 2021, which makes tweaks and fixes bugs.

World generation

 * Caves
 * Tweaked numbers of their features.

General

 * General
 * Now save chunks whenever there is time spare to reduce autosave spikes.