Minecraft wiki entry for Development_versions, associated text: MC-107581 – Animation of totem is affected by "fixed" display setting rotation (and is inverted)
MC-108270 – Wither skeleton spawing quelled by normal skeletons
MC-109303 – Hoppers do not pass items back and forth at a regular speed and comparators can not read them correctly
MC-109507 – Placing Shulker Box at 0 0 0 Causes Client Crash
MC-109563 – Trapped chests no longer *update* components it powers through the block it's on