Launching qmlviewer with no args, implicitly using native file-dialog doesn't repaint properly on N900

Launching qmlviewer without any arguments causes the (native) file dialog to be invoked. When using this to open a qml file, the loaded QML UI will not be properly painted and only updates occasionally when invoking the task switcher. This seems to be similar to issues that occur when using the commandline argument -frameless with qmlviewer on N900