Type of Aircraft Route Limitation

I am playing Age of Flight. When I create most routes but now can name FRA-ATL, using 330-200F, I expect capacity limitation. When originally creating the route, the limitations on the 330 types does not appear. To see the limitations I must first create the route then edit it. It has also happened on other routes.

Something which I just realised. The range of the 330-200F is 4,000NM. The FRA-ATL route is 3999NM. I'm sure flying East I should expect some limitation. Checking on editing route, while all the limitations or no limitations appear, for the A330-200 'No Limitations' appears. Thank you Ed