https://bugzilla.redhat.com/show_bug.cgi?id=1160935

--- Comment #19 from Pravin Satpute psatpute@redhat.com --- Historically Liberation was also substitute for "Sans (a substitute for Arial, Albany, Helvetica, Nimbus Sans L, and Bitstream Vera Sans)". https://fedorahosted.org/liberation-fonts/

I don't know why we stopped doing that or may be we missed doing it from beginning.

For now i think lets go ahead by adding Liberation as an alias for Helvetica and see how it goes.