Minecraft wiki entry for Development_versions, associated text: MC-146353 – Structure integrity does not work, RNG runs for all blocks at once.
MC-146359 – Crash whilst rendering overlay.
MC-146360 – Exiting bed always puts the player or villager in blocks.
MC-146367 – Hostile mobs spawning on glass.
MC-146377 – Beacon UI is nonresponsive and doesn't allow you to change the beacon effect.
MC-146380 – After sleeping in a bed, the player always spawns on top of it if there are no blocks next to it.
MC-146381 – Sleeping in a bed always resets the player's spawn point to the world spawn point.
MC-146387 – Monsters spawning on leaves during night time.
MC-146470 – Entities in forceloaded or world spawn chunks cannot be selected.
MC-146667 – Multiple raids can occur at the same time.
MC-146707 – Splash text in main menu changes every time player resizes the Minecraft window.