Minecraft 1.18 Snapshot 21w38a (Simulation Distance Parity)

Minecraft 1.18 Snapshot 21w38a adds Simulation Distance as an option for Java Edition, along with a few other technical changes. Sprinting has been tweaked for better quality of life, copper and lapis ores generate differently, and strongholds have been restored after generation issues in 21w37a.

Features:

Sprinting is no longer reduced to walking when gently brushing your sleeve against a wall.
Fixes for the distribution of ores.

Ore Distribution:

Copper ore generates up to y 95 (as originally designed).
Increased the amount of copper.
Lapis lazuli generates in blobs, like other ores (instead of spread out).

Sprinting:

Previously, any collision with a block would reduce sprinting to walking. Now, for very minor angles of collision with a block, players retain their sprint. For larger angles of collision, the old behavior is retained.

Screenshots:

How to install:

To install the snapshot, open up the Minecraft Launcher and enable snapshots in the “Launch Options” tab.
Snapshots can corrupt your world, please backup and/or run them in a different folder from your main worlds.