I too Noticed that when I missed one, it automatically restarted the test for me, so i got a 100 now. I am guessing there is something set to “encourage your to get 100 before moving on.”
Hey folks, you are right and hopefully we will have the styling issues fixed today!
To answer your question, yes you need 100% to proceed. However, you may also need to click the Mark as Complete Button in order to proceed if you are having problems.