Hi Daniel,
I'm not able to see the issue using the version 5.7.
Your version 5.4.1 is quite old now and I'd suggest you to try your scenario using the latest version QWP 5.7.
You can try it online using the Quest Virtual Drive.
Go to http://www.quest.com/web-parts-for-sharepoint/ then search for QuestDrive – Virtual Trial
Please let me know how it goes.
If you still can see the issue please attach the doc library and the web part template to this tread.
Thanks,