If i add the portfolio module to an sp page builder page everything works, but if i click on "View" on this item i am getting a HTTP 404 response. The same item works perfectly if i assign the sp page builder to the menu directly.
Link without category (usage through menu): <redacted>/index.php/test2/2-vactrailer-s-4.html
Links with category (usage through sp page builder): <redacted>/index.php/filo/2-vactrailer-s-4.html
PS: I just tried again the original module, it seems to work not, but only as long as i have the menu item published.
So it seems to only work if a menu item is assigned with it.