I just made an update (from 3.1.19 to 3.1.20) and now I have some issues.
On mysite.com/courses page I have a list (instead of to have the original presentation of a ...com/courses page with featured images) of topics, lessons and pages
On my index forum page (mysite.com/forums) (bbpress), I have exactly the same content. I don't understand.
I try to deactivate bbpress to see change but I have the same thing on mysite.com/courses.
I verify my permalink and I have "postname"
Thank you for your help.