j numminen
I have to say that I am having good success connecting whichever route I want around here. I am happy with the base map data, and mostly happy with onthegomap's interpretation of the data—the only weird thing being that they do not respect access=no set in https://www.openstreetmap.org/way/24908407. 

The route that I believe should be open is https://www.openstreetmap.org/way/334759502 so that's outside the construction area, were you clicking around there to create your map?