they have a bug that tracks this use case https://bugzilla.mozilla.org/show_bug.cgi?id=1208596 https://bugzilla.mozilla.org/show_bug.cgi?id=1208596 and a larg

they have a bug that tracks this use case https://bugzilla.mozilla.org/show_bug.cgi?id=1208596 https://bugzilla.mozilla.org/show_bug.cgi?id=1208596 and a larger in scope bug https://bugzilla.mozilla.org/show_bug.cgi?id=1315819 https://bugzilla.mozilla.org/show_bug.cgi?id=1315819