Image fillMode and ShaderEffect interact in unexpected ways

ShaderEffect does not display Image as-it-appears in the presence of custom fillModes. I assume this is due to internal optimizations (grabbing the texture from an Image directly)

The following example demonstrates the issue:

import QtQuick 2.0

Row {
    Image {
        id: logo
        width: 200; height: 100
        source: "qt-logo.jpg"
        fillMode: Image.PreserveAspectCrop
    }
    ShaderEffect {
        width: 200; height: 100
        property var source: logo
    }
}

In this example, the Image and ShaderEffect version display differently, as shown in the attached screenshot. I would have expected them to display identically.