If there are other changes I will be just as surprised as you so god I hope not.
I was told the issue was as simple as that one liner I posted - dead ends would try to fill the map - they are now restricted to no longer than 6 tiles.
As always, we will be keeping an eye out for any issues once we have the whole playerbase’s eyeballs on it, thousands of heads are better than 1 or however that saying goes.