Here is a list i made with the bugs in minecraft 1.7 pre release

• Boats still break easily on the first lily pad.
• Boats only stare if you press forward.
• Cactus misses shadow line line between flanks in the Decoration Blocks menu (also in full screen - F11).
• Cactus misses shadow line between flanks in the item balk menu.
• Cactus misses shadow line between flanks in small/normal screen (not in full screen - F11).
• Trees dont grow next to tall grass.
• Dark oak sapling only grows if there are 4 saplings placed (like the big jungle tree).
• Ender Dragon don't always shows it getting hit (it doesn't turn red).
• Grass, plants and trees are grown on sand on the start of a game.

Add on:

• Air pockets in ocean / water, amplified world maps.
• Chest in creative inventory is open and closed at the same time.

If I got the time ill test 1.7.1 today and make more add-on's or crosses thru bugs that are fixed.