OneAndOneIs2

It *is* a known bug: Bug 215055

Native widgets only support 16-bit coordinate space. The solution is to remove the use of them, which requires roc's Compositor, which is a massive code overhaul. The scope of the changes required for the Compositor make it unsuitable for 3.0.x or 3.5.x inclusion. As it stands right now, the Compositor *may* land for Gecko 1.9.2, which will be the basis for whatever version of Firefox comes after 3.5.x, but even that is not guaranteed at this point in time.

Since this bug report dates back to 2003, it seems a little odd to me that it's still broken, but so it goes.. It'll apparently be fixed in a version or two..