the game opens with a black screen

Links cause fps drop when visible

The outline of the block I point at is not visible under/behind water.

Damaged armor, tools & weapons placed in certain inventory slots cause other slots to go black

Horizon and sky brightness is affected by the light level of the block the player stands.

Launcher won't resize game window of Minecraft 1.5.2 according to resolution setting in Profile Editor

Maps in item frames load significantly slow until/unless copies of these maps are inserted in the inventory.

Flint & Steel won't be replaced in hotbar when using pick block.

Efficiency enchantment doesn't work on some blocks

Player trapped/can't get out of flowing water