Minecraft wiki entry for Development_versions, associated text: MC-4405 – Beacons work inconsistently in the Nether.
MC-48219 – Keyboard input causes mouse look to stutter or jerk (Fixed in LWJGL 2.9.3).
MC-48969 – Tellraw crashes if clickEvent is an URL without "http://".
MC-49704 – Mooshroom udder texture does not display correctly.
MC-50769 – Mooshrooms incorrectly display custom mushroom models.
MC-67727 – Beacons in Nether need clear path to "sky".
MC-75083 – Single Player: Can't select any of the previous created worlds in Java 8 (Fixed by installing Java 7) (Windows 8).
MC-76611 – villages.dat stores player names instead of UUIDs.
MC-76650 – Glass Pane image flipped.
MC-76747 – Various particles near world border rendered incorrectly.