Sculk Shrieker particles are not visible from behind.

Wardens don't move while in lava.

Wardens Avoid Lava Despite Being Immune To It

Sculk Shriekers can be activated by mobs if a player is in range.

Wardens can spawn in light levels higher than 11.

Sculk Shriekers summon the warden even if they are placed by a player

Sculk Shriekers summon the warden even if they are placed by a player.

Item models are in grayscale while on the ground or held in latest Beta

Vines spawn on terrain above lush caves

Mobs randomly freeze at one location, but act like weird "ghost mobs"

Warped and crimson slabs, stairs, and planks cause fire to spread around them even though they don't burn

When view bobbing is disabled, only blocks will stay static, while arms continue to Bob.