Resource Urls with colons are treated as relative Urls

when I assign a string to a url property like

 
//file: :/components/MyComponent.qml in resouce it is treated as if were a relative Url.
import QtQuick 1.1
Image {
    source : ":/images/image.png"
    onSourceChanged {
          console.log(source)  //writes file::/component/:/images/image.png
    }

}

if used from a MyComponent.qml in "subfolder" in resource files "components" it would expand to : file::/component/:/images/image.png
Same is when calling Qt.resolvedUrl(":/images/image.png"). You'd expect that it would expand to e.g. qrc:///images/image.png or file::/images/image.png but it also resolved wrong.