Minecraft wiki entry for Development_versions, associated text: MC-185282 – Debug worlds start generating normal Overworld terrain after reentering world.
MC-187953 – Adding items to #minecraft:small_flowers item tag and feeding them to brown mooshrooms crashes the game.
MC-188746 – Not selecting a biome for the Floating Islands world type generates an empty world.
MC-188859 – Incorrect throwing animation for tridents.
MC-189007 – When entering or leaving swimming mode both arms now move in parallel instead of symmetrically.
MC-189782 – Large ferns only drop one small fern when harvested.
MC-189858 – Leads can disappear when transporting a mob through a Nether portal.
MC-189937 – Saddled pigs accumulate speed when ridden in water.
MC-189970 – Selected worlds using keyboard nav does not enable world-specific options such as Play, Edit, Delete, and Re-Create.
MC-189973 – ClassCastException when bee with passenger flies through village at night.
MC-190005 – Piglins can spawn with gear with too many enchantments, including multiple enchantments of the same type.
MC-190036 – Passive mobs do not spawn in the Floating Islands world type.