When CA_QUEUE_ENABLED is set to 1 in setup.php, tilepics and thumbnails are generated uncorrectly.
It happens both in media import and in objects and media representations editor.
Such issue does not occur in v. 1.7.6.: I made tests with "out of the box" Providence versions 1.7.6 vs. 1.7.8, Dublin Core metadata sets.
Application version 1.7.8
Schema revision 158
Release type RELEASE
System GUID 9ee81fbd-c5f2-438b-9de2-8322e681e074
Last change log ID 17547