Created attachment 7441 Print Screen In the process of trying to install a New Printer, the system finds it, but the window is longer than the screen and can not be resized, preventing the Next and Cancel buttons (which have no shortcuts) to be pressed and the installation from happening. Maybe there's way to force the window to be resized, but I couldn't find it before coming here.
This is not related to xfce, there is no printer helper in it.