Challenge problems☹️

On the new "Road to Nowhere" challenge theres an invisible wall in the middle between the 3rd and 4th bearing that messes up the camera and sometimes stops you completely. 

Anyone else also have an issue with challenges sometimes not giving you the "do everything in one run" checkpoint ? I'll do the whole run in one run, it will give me everything at the top BUT the part that says do it in one run. It's really annoying. It also happens normally too, challenges just wont mark off parts I've done even after doing them over and over again. Some weeks they work then when they refresh some are completely broken, I don't understand