Minecraft wiki entry for Development_versions, associated text: MC-29489 – 2x2 Spruce trees won't grow.
MC-30870 – Commands with coordinates are offset -2 x and/or z from where it should (at negative X and Z coordinates).
MC-31656 – Can't see fire on spiders.
MC-32862 – Hopper: java.lang.NullPointerException: Ticking entity.
MC-35716 – Rain cannot be seen through stained glass.
MC-35739 – Crash when hovering over a written book given by commands.
MC-35846 – Hopper: java.lang.IllegalArgumentException: n must be positive.