Wrong Gnome menu bar label
dnfdragora puts "python3" as the application name in the menu bar Fedora 27

Honestly using Mageia and Plasma i don't have such a problem. dnfdragora is a python script so or someone in fedora changed it or run dnfdragora in a different way or it is a desktop environment problem.
This is observable on Mageia GNOME, too. I'm not sure how to fix this, because I don't know how GNOME decides the title.
@hellcp seems to be another libyui-gtk issue to track, i cannot see it in Plasma though
It's decided via a few factors, but the easiest way to fix that is to associate the application with a desktop file (which should be done for Gtk and Qt implementations for that matter, due to Wayland). I also need to do this for YaST at some point, but I didn't have much luck yet.