It's not that there's a single point. It's that the polygon doesn't have a closing ')' for the "pts" clause. Note that the next ')' is 4 spaces away, so it is closing the "polygon" clause.
It looks like somehow the zone iterator was mixed. Looking at the code, there's a way we could have generated this, so I'll fix the proximate cause. But I'm still not certain how we ended up with the broken polygon to begin with.
It's not that there's a single point. It's that the polygon doesn't have a closing ')' for the "pts" clause. Note that the next ')' is 4 spaces away, so it is closing the "polygon" clause.
It looks like somehow the zone iterator was mixed. Looking at the code, there's a way we could have generated this, so I'll fix the proximate cause. But I'm still not certain how we ended up with the broken polygon to begin with.