There exist several open bug reports for package metacity addressing the outdatedness of
the version available from the build server, e.g. see
https://bugzilla.redhat.com/show_bug.cgi?id=1217991.
Package maintainer Owen Taylor has not replied to any question or request for months. Does
anybody know about his current status? His latest build on Koji seems to date back to
2015. Thanks, ~JF.