setting a image (or background-image) with QStylesheet doesn't work properly when working with background-color also.

When the background-color has been set e.g.

• {background-color: grey;}

  and one try then to set the image or background-image for a QWidget Container with a selector like e.g. the class selector:
  .QWidget

  {image: url(:new/prefix/headline.png);}

  this won't work.
  Hint: In my case the QWidget Container contains two QLabel childs.