How to reproduce:
- name a PNG file Nuxeo's logo.png
- Drag&drop it in a Folderish document in the JSF UI
- switch Folderish document's view to Thumbnail view
No thumbnail image is rendered.
The 'single quote' character is not encoded in the URL retrieving the thumbnail image, see screenshot below:
Replacing the 'single quote' character with %27 fixes the problem.