https://bugzilla.redhat.com/show_bug.cgi?id=1187528
--- Comment #5 from Akira TAGOH tagoh@redhat.com --- If it looks good on gnome-font-viewer, the font actually used for rendering on apps where you are seeing a problem may be different to what you expected because gnome-font-viewer disables the fallback on selecting a better font in pango. What exactly a font used in pango is hard to see at this moment. just checking the result of fc-match isn't necessarily correct to report the details.
The difference between f22's and f21's related to this I think is, there are the change in scoring a font for bitmap and outline which prefer an outline font rather than bitmap until then, which was a bug. though the behavior looks opposed to that.
I'm not sure if it makes any difference, how about enabling 70-yes-bitmaps.conf?