PC [UnrealScript] Canvas broken canvas functions

[Marco]

These 2 functions seam to be broken in KF2 (they were functional in UDK):

native noexport final function PushMaskRegion(float X, float Y, float XL, float YL);
native noexport final function PopMaskRegion();

They were useful for clipping canvas tiles or text on HUD, but seams to do nothing anymore.

For example:

Canvas.PushMaskRegion(100, 100, 200, 50);
Canvas.SetPos(100, 100);
Canvas.DrawText("Hello, world! =============================");
Canvas.PopMaskRegion();