There are two problems in the 6.1.x UI of the Documents and Media portlet.
- Previews generated for file entries are not shown in shortcuts.
- Shortcuts for file entries that are checked out show both the shortcut link icon and the padlock icon on top of one another.
- Upload an image to the Document and Media portlet. Wait for the thumbnail to be generated.
- Create a shortcut to this image in the same page (first problem shows up).
- Checkout the original file (second problem shows up).
This should be verified against all major file formats that we generate previews for (PDF, Image, and Video).