Restarted my computer, started minecraft and newest snapshot was installed, and now all item frames are black (see attached pic).
Just noticed something else too, there's no water running or lava sounds if they are behind blocks (sealed walls etc) or under obsidion. The subtitles tell you it's there, but no sounds. Not sure if this affects skeletons/zombies etc though

Also, not sure if these are bugs, but the blocks that get mined with pickaxe shine really bright even in the dark, and it's really distracting, same with the pickaxe shining a lot when mining. When the blocks drop from above it's really hard to see anything else (ie If monsters are there etc)