Although perhaps not a "duplicate" of Bug #1509877 (assessed to be a "critical" bug for Lubuntu), this bug and that bug at least seem to be related. See https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1509877
Although perhaps not a "duplicate" of Bug #1509877 (assessed to be a "critical" bug for Lubuntu), this bug and that bug at least seem to be related. See https:/ /bugs.launchpad .net/ubuntu/ +source/ ubiquity/ +bug/1509877