Minecraft wiki entry for Development_versions, associated text: MC-108676 – Skeletons and wither skeletons can spawn anywhere in the Nether.
MC-108685 – The corners of the offhand hotbar slot have transparent textures.
MC-108718 – Illagers and Vexes not randomly looking at the player when not aggressed.
MC-108727 – Thorns enchantment has no effect on vexes.
MC-108729 – When giving yourself items with negative durability, the game crashes.
MC-108752 – Elder Guardians spawned from spawn egg/command do not have full health.