A Firefox maintainer answered: "I don't think we can do anything about this in the Firefox side. You need to bring this up to the maintainers of IceCat and its language packs first. If there's a problem that needs to be fixed on our side, they should be able to identify it and file a more specific bug, or submit a patch." - https://bugzilla.mozilla.org/show_bug.cgi?id=1148841#c1
-- http://gnuzilla.gnu.org
