Minecraft wiki entry for Development_versions, associated text: MC-153230 – Players in spectator mode can stop minecarts.
MC-157774 – Bouncing off side of blocks while creative flying.
MC-158735 – Pillagers without crossbows hold their arm up in a way that may be offensive to some people.
MC-166718 – Mobs no longer suffocate inside of soul sand, farmland, or grass paths.
MC-176778 – Camera is reset when a block reappears due to high server latency.
MC-176836 – Unarmed vindicators raise their arm in an offensive way when attacking.