Sometimes the base map that Strava uses gets modified and road types and connections change. I believe Strava updates that map every couple of months. If you see something out of place, click the i in the corner and “improve this map”. The map data is taken from Open Street Map and you’ll have to submit your change through them. But to get around your route creation problem now, you can put down some manual waypoints and carry on.

thanks ​@arc88 tried as you suggested, checked the original map and there was no closure to edit/report. anyways, valid answer, thanks