In the minecraft 1.5 snapshots, I find there is a bug with the inventory. Since there were features added to that part of the game, when simply trying to pick stuff up and move them, i find myself having to click twice, sometimes the item won't be able to be picked up. I think it has to do with the dragging feature added, it needs tweaking anywho.
Environment
Toshiba Satellite
6gb RAM
ATI mobility radeon hd 4200
quad core intel 2.2ghz cpu
latest java jre6 and 7 versions
Linked issues
Comments 2
Duplicate of MC-5719.
It seems like if you click an item and move your cursor away too quickly, it doesn't pick up the item.