When using the “scan” option to import images that were uploaded through FTP into a gallery, the files are not correctly imported if the filenames have special characters. For example:
Fußball.jpg
Test_an_ümläüt.jpg
In the database, the filenames will be incomplete:
Fu
Test_an_
This breaks the entire gallery and the directory has to be renamed to re-attempt a scan since the incomplete file names remain in the DB even after permanently deleting the gallery.