Images on the GUI layers look strangely distorted when their x/y coordinate(s) has/have any decimals in them (like 200.5 or something). This is pretty annoying considering that such values come up quite frequently when using formulas like "GraalControl.width / 2" to get the center of the main window. Images on GUI layers should just stick to the "pixel grid", auto-convert to integer values; whatever you want to call it.