Green Guy On Course Page Still Has Empty Crown Even With 100% Mastery and Good Course Challenge Score

On the main course page, my little green guy in the lower left corner still has an empty crown and circle mouth face, even though I have 100% mastery, a 93% on the course challenge, and have completed all of the units. I feel like I'm ready to move on from this course, but I feel bad leaving the guy behind before giving him a golden crown and smiley face. Do I have to get 100% on everything, or does this particular instance of the crown guy never get a yellow crown and smiley face? (Annotated screenshot attached)