Product: Fedora https://bugzilla.redhat.com/show_bug.cgi?id=825081
--- Comment #13 from Pravin Satpute psatpute@redhat.com --- Great, Behdad fixed this issues in harfbuzz. Now ಚ್ಚ್ & ಡ್ಡ್ works well with other Kannada fonts as well.
So AFA i see no more combination need fix in list provided.