Properly configured clusterized file storage (DFS).
Steps to reproduce
- In site.ini.append.php set
- Under root directory create a folder or gallery which name contains special character (for instance quotes ").
- Go to the directory created in step 2. Create the new image and publish it.
- Edit image created in step 3. Discard draft.
You should notice that image will be no longer visible. In the DFS database, you can see, that all image aliases and image itself has expired value set to 1, however, files are still in the DFS filesystem.