I got same problem, overlay dont work. I try default themes and no changes. (tataraki.pl)
In the case of option list “below content” instead:
1. Image list headline
2. (dot) Image title + image source
Much better was that one line:
1. Image list headline + image source (without the dot, smaller font)
Location of information should also be placed under the picture and not on the bottom of the post.
