I couldn't find anything wrong. Wonder if maybe this was a caching bug?
Yes, I just looked as well and it seems to have been fixed. Must have been caching. More generally the progress bars on imports are not working (so you can't see which updates were rejected). It just gets stuck on 'Importing 0 out of ... answers'. Could be related, I guess?
I'm not confident that there isn't still a problem, but I don't have a way to reproduce. Do you? If not, we should close this until we do.
I haven't seen this problem for a while so I will close the ticket