QEmu Fullscreen Aspect and Scale Issues
QEmu doesn't seem to rescale the content of the fullscreen window when the client system does, meaning that the picture is just cut off at both the bottom and right hand sides, depending on the new client resolution.
Going out and back in to fullscreen mode seems to temporarily fix this, but this seems to need to be redone every time the client changes resolution.
Even then, the aspect ratio is ignored and it simply stretches the image to match the host's resolution regardless what it is.
It also appears to be applying bilinear filtering automatically with no mention of how to turn it off.