Affects Version/s: Minecraft 1.4.4, Minecraft 1.4.5
Fix Version/s: None
When you throw item ('q' key) on lower step of a stair,
item bounces on it. In certain condition, item bounces
long time...till it disappears in 5 minutes.
I'll attach sample world data.
In 1.4.2 release, items fall onto lower step of stair, and
you cannot pick up them. This occurs in 1.4.3 prerelease, 1.4.4 release and 1.4.5 release.