Pixmap displayed improperly using -graphicssystem opengl

In the attached example, the image is displayed incorrectly (grayed, with extra lines) on the N900 when running with:

qmlviewer image_bug.qml -graphicssystem opengl

It works as expected with

qmlviewer image_bug.qml -opengl

(which creates a QGLWidget for the viewport) or using raster.