I think NAA posts by users who are suffering 18.04-related problems deserve good comments but I'm not sure what to write
here. It doesn't attempt to answer the question, they might not have enough information that it would make sense for them to post their own question (usually for this sort of question people do, but this case manifests a bit more simply), and especially if karel's answer doesn't work for people then I think the question is OT bug.