Minecraft wiki entry for Development_versions, associated text: MC-162538 – Creative menu corners have opacity issues; outlines have no transparency.
MC-162550 – Offhand slot is glitched/black in some circumstances.
MC-162586 – Log repeatedly prints the message "Ticking entity", and finally crashes the game.
MC-162616 – java.lang.NullPointerException after attacking a parrot.
MC-162671 – Mooshroom cow's mushroom texture is too bright.
MC-162936 – java.lang.IllegalArgumentException when using an enchanted totem of undying.