Minecraft wiki entry for Development_versions, associated text: MC-137724 – Crossbows creating phantom arrows.
MC-138041 – Debug screen tells that you can F3 + Alt for client's FPS, but not for server's TPS.
MC-138069 – End gateway teleports you to the obsidian end platform.
MC-138225 – End crystals are spawned in the air when respawning the ender dragon.
MC-138448 – End pillars aren't centered to cords 0x, 0z.
MC-138982 – Scaffolding connects to fences, walls etc.
MC-139758 – Stopping the server doesn't work.
MC-139819 – Profiler error "Cannot push to profiler if profiler tick hasn't started - missing startTick()?".
MC-140109 – Wither and ender dragon break jigsaw blocks.
MC-140110 – Ender dragon break structure blocks and structure voids.
MC-140231 – /locate command locates invalid EndCity location.
MC-140277 – Locating a New_Village in customized superflat freezes server-side.
MC-140636 – End city failed to generate, generated in the void.
MC-142623 – Scaffolding cannot be placed within the same block that the player is standing.
MC-142677 – Parts of scaffolding become dark when next to full cube opaque block.
MC-142679 – Mobs cannot pathfind through scaffolding.
MC-142680 – Items do not collide properly with scaffolding.
MC-142847 – Natural llama spit cannot be detected by commands.