Each time a dnf transaction runs update-mime-database (even if the transaction does not include epiphany) the following warning is printed: Warning in file "/usr/share/applications/epiphany.desktop": usage of MIME type "multipart/related" is discouraged ("multipart" is a media type that probably does not make sense in this context) Please fix this (remove the bogus multipart/related mime-type from the list of mime-types in the .desktop file). See: http://pkgs.fedoraproject.org/cgit/rpms/gnumeric.git/commit/?id=f17620fc592fc8f03f9e5a559f89ed3aef7886fd For an example fixing a similar bug.
Note it's not bogus; we really do support that MIME type.
*** This bug has been marked as a duplicate of bug 1291783 ***