QML Image asks the imageprovider for zero sized images and doesn't accept the result

If you have a custom image provider, requestPixmap is called also for Image elements having

a width/height zero, but if in that case a zero sized pixmap is returned, that is not accepted and an error is given:
QML Image: Failed to get image from provider:

First of all I think it should not request images that have a width or height of zero (this would be an optimization), but if it does it should accept that a zero sized pixmap is returned.

See attached example that shows the error.