Hello, there,
I have the same problem, as well. Admin post listing filters produce no posts when the plugin is active. The problems goes away when the plugin is deactivated.
I think @dpodwaln is right and the plugin should be amended, so that it only run in the front-end!
Cheers,
Takis
Update:
Actually, to make things a little more detailed, it seems that the plugin is somewhat confused by the free text search field, which becomes a url parameter like ?s=. It is not very obvious but, although the free text search field has its own submit button, it is part of the same HTML form as the filters below it. So, when one executes one of these searches, they actually execute them both combined!
Anyway, if the user executes the filter search with an empty free text search field, then the corresponding url parameter is an empty ?s=, which in turn results into what @dpodwaln explained earlier.
Also, if the free text search field has some value, then the whole search/filter process is actually executed correctly. Now, I do not really know if the plugin is supposed to run in the admin in the first place, but all this certainly is problematic.
Hope this helps!
Cheers,
Takis
