I suspect this may be fixed in 11.0~b4. Tracing through Mozilla's bug tracker, it appears that the underlying bug is #726777, which is marked as fixed in beta4 and appears to be security related (special privileges seem to be needed to view that bug).
-- Paul Martin <p...@debian.org> -- To UNSUBSCRIBE, email to debian-bugs-rc-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org