Geocoder Options For Allowed Region Does Not Work For Small Areas

I tried to implement a search query for when a user types in an address. All of my users are in the same small area, so I created a relatively small bounding area for my search (~20 miles radius). But, for some reason, when I would search my desired address, which I know should be in my small region. It does not return the address when the user searches for it. The only way I could get the address to show up was to increase the allowed region to the entire state. I even checked that the desired location's coordinates were in the small region, and it returned true. Since my app is only supposed to work in this small city, I would like to be able to only allow the user to select addresses that are in the city and nothing else. Here is my code with comments about which region worked and which one did not:

private func createOptions(from address: String) -> ForwardGeocodeOptions {
        let options = ForwardGeocodeOptions(query: address)
        options.allowedISOCountryCodes = ["US"]
        
        let indianaUniversity = CLLocation(latitude: 39.1745704, longitude: -86.5173232)
        options.focalLocation = indianaUniversity
        options.allowedScopes = [.address, .pointOfInterest]
        options.allowedRegion = createBoundingBox()
        return options
    }
    
    private func createBoundingBox() -> RectangularRegion {
        let pointOfInterest = CLLocationCoordinate2D(latitude: 39.163899999999998, longitude: -86.522330999999994)
        
        //Works:
        //This covers the entire state of Indiana
        let indianaNortheastCorner = CLLocationCoordinate2D(latitude: 41.722131, longitude: -84.80896)
        let indianaSouthwestCorner = CLLocationCoordinate2D(latitude: 37.822802, longitude: -88.027954)
        let indianaRegion = RectangularRegion(southWest: indianaSouthwestCorner, northEast: indianaNortheastCorner)
        
        //return true
        indianaRegion.containsLocationCoordinate2D(pointOfInterest)
        
        //Does not work:
        //This just covers the Bloomington County area.
        let southwestCorner = CLLocationCoordinate2D(latitude: 0, longitude: -86.87026977539062)
        let northeastCorner = CLLocationCoordinate2D(latitude: 39.25352462727606, longitude: -86.28971099853516)
        let smallRegion = RectangularRegion(southWest: southwestCorner, northEast: northeastCorner)
        
        //returns true
        smallRegion.containsLocationCoordinate2D(pointOfInterest)
        
        
        return indianaRegion
    }`

Bắt đầu bằng cách tái hiện tìm kiếm được báo cáo thông qua createOptions(from:) và createBoundingBox(), tập trung vào ForwardGeocodeOptions.allowedRegion và RectangularRegion. So sánh các vùng nhỏ và vùng trên toàn bang bằng các tọa độ được cung cấp, sau đó xác minh rằng geocoder trả về các địa chỉ nằm trong khu vực dự kiến đồng thời loại trừ các địa chỉ khác.