There seems to be a bug with a scoring card. It's also doing this even when scoring the card would grant them domination.
Below is an explanation:
For those who haven't been following this issue, it's actually a NEW bug, introduced in a later build/update. So the Steam version originally didn't have this issue (though the AI was still pretty lousy, but playable). Steam got an update with bug fixes, but it introduced this bug as well.
The Apple version seems to be based on that bugged Steam version. Steam has since gotten an update (several days later), so it's no longer an issue there. So clearly the code fix has been performed, it simply needs to be propagated to the Apple version now.