Minecraft wiki entry for Development_versions, associated text: MC-44474 – Smooth teleportation while falling glitches player back up.
MC-46670 – Withers trapped in a barrier box attacks barriers, killing it.
MC-48633 – Operation, test and enable doesn't show up as options when typing /scoreboard players.
MC-53558 – World generator crash when creating a custom new world (different than others).
MC-53983 – Loading world on new world or loading screen disappears if the window size is changed.
MC-54575 – Part of stair becomes invisible when placing a block near it.
MC-54626 – Chicken jockey falls into solid block when chicken dies.
MC-54929 – Fast creeper bug (aka creeper zurg rush).
MC-58908 – /help for /worldborder not updated.
MC-61610 – Bedrock at Y0 has wood log in it at x0 y0 z0.
MC-64515 – Inconsistency in piston timing.
MC-68880 – Rabbit falls through snow layers and suffocates.