After checking, it seems it could be true for Tesla to use OSM data. I checked the configuration of Boulevard Taschereau there and the right lane is so large that it was counted as two lanes, but there is indeed no markings so I converted to 4 lanes instead of 5 for this segment. I also changed the double exit lane to a single one. There used to be a bus lane there but it seems it is now inactive. See https://ibb.co/9VZr178 where we moved the exit lane up to the theoritical painted gore.