Here is a bug since release on the map Guadalcanal, there is a blocking volume in the path:
http://steamcommunity.com/sharedfiles/filedetails/?id=198934516
http://steamcommunity.com/sharedfiles/filedetails/?id=198933160
http://steamcommunity.com/sharedfiles/filedetails/?id=198934516
http://steamcommunity.com/sharedfiles/filedetails/?id=198933160