Hi,
I'm using iJoomla magazines on two sites, and both have the same problem.

When viewing the author list, there is an option to increase the number of author that appear to 15, 20, 25, 30, 40, 50

The default is ten, and when I change it to something else, the page reloads and I still get 10 authors and the drop down menu goes back to show 10 again.
(see attached image)

I'm not sure weather this is a bug, but since I have it on both sites, then I though it could be a bug.

Regards