I am using a custom role (from the premium plugin wp-client) but for some reason it can't view posts or pages of any kind. WordPress shows the correct post count but only shows the message "No posts found".
Strangely, it is possible to edit the post content if you have the right edit url (i.e. example.com/wp-admin/post.php?post=XXX&action=edit).
I have tried using multiple capability managers to assign the correct permission levels but this has no effect. This behaviour is identical across posts, pages and custom posts. Other custom roles made by the plugin can view everything normally.
What could cause this?