Minecraft wiki entry for Development_versions, associated text: MC-244174 – Fog effect for void, blindness, water, lava and powder snow is cylindrical.
MC-245345 – Crash when reloading chunks.
MC-245347 – Flying with an elytra and colliding with floating flowing water sometimes doesn't reset fall damage.
MC-245406 – Memory leak leading to crashes when loading pre-1.18 chunks.
MC-245416 – Baby turtles suffocate on soul sand.
MC-246445 – Game crashes when dispenser with shears is used on non-beehive block in #beehives tag.
MC-246449 – Game crashes when villager tries to open non-door in #wooden_doors tag.
MC-246464 – Game crashes when dispensing a bone meal in a warm ocean and there is a block with no facing block state in #wall_corals.
MC-247415 – Game crashes if coral related block tags are empty during coral reef generation.
MC-248316 – Minecraft server 1.18.1 crashes with OutOfMemoryError: Java heap space.