[BUG?] @mention in checklist

Hey,

a minor technicality, which might not even be a bug, but seemed a bit weird to me.

When I’m posting a new Update, and use Checklist function, I can’t use @mention as the first word, because it will remove the Checklist.

If I use @mention first, and then revert it into a Checklist, the @mention person name will be there, but no longer as a link, but just plain text.