Minecraft wiki entry for Development_versions, associated text: MC-5742 – Redstone signals shortened by devices that output a shorter signal.
MC-6069 – Server loading issue.
MC-6118 – Monostable circuits only work in a North/South configuration.
MC-6228 – Hopper doesn't accept items from second slot when container has different items in first slot.
MC-6486 – Variable redstone strength causing strange update behavior.
MC-6779 – Particle effects are messed up again...
MC-6851 – Doorhandle position is in the wrong place.
MC-6906 – Chest minecart won't deposit items in hoppers while moving.
MC-6952 – Iron door stays powered when retrieving the redstone block.