Descriptive Problem Summary:

Some transformed icons that should appear do not because they get culled, incorrectly being determined to be out of bounds. When not culled, their position may be wrong for mouse input.

Numbered Steps to Reproduce Problem:

1) Create a 96x96 icon in a normal world.
2) Make an object with that icon and give it a transform of matrix(1,0,-32,0,1,-32).
3) Put the object on the map somewhere where you can move out of view to the south.
4) Walk to the object, then go south until it disappears prematurely.