Hmm, yes. Since it's just this profile and doesn't happen with loads of others, looks like that has to be the reason.
So, looking at it from Anne's point of view, she shouldn't have married Thomas (1568) after he was dead (1550).
But from his point of view, it should just say he shouldn't have married (1568) after he was dead himself (1550). His spouse's dates are irrelevant.