Minecraft wiki entry for Development_versions, associated text: MC-15152 – Standing in a nether portal and opening a chest will render the chest open until another chest is opened
MC-79154 – Hoppers occasionally duplicate items (within chunks)
MC-86850 – Ender Pearling through a nether portal in the over-world tp's you to the portals nether coordinates but in the overworld
MC-91803 – Cave / ambiance music can play far away from the player and is not audible
MC-120444 – Almost any entity inside farmland gets teleported when it turns into dirt