These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
8c19715
Reduced GTK to GTK2 because of known bugs. Upstream reports several known bugs with GTK3 and certain Linux environments. Reducing the GTK dependency to 2 for now is a workaround while upstream fixes these issues for the next release.