Another America bug to report, unfortunately. This time, with the Washington replacement included with the FDR civ. The ranch is not claiming horse/sheep/cattle tiles and it is not building improvements on one's already within borders. It does still give the extra hammer to the unimproved resources within borders though. Screenshot example. No readily apparent cause of the bug, but I can play around to narrow it down if you think there's a likely culprit. And if there's other info that would be helpful to you, let me know and I'll try to send it to you.