Coin reward trouble
I have tried searching for an answer but apologies if it's a common problem, I could not find anything similar.
Often when I complete a lesson with hearts remaining and without hovering my mouse and "looking" at a words definition I will receive no coin reward. Most frustrating is when I complete a perfect lesson and get zero coins for having full hearts and no peeking. Is this from redoing courses I've already completed but want to practice? Sometimes it happens on courses I have not completed.
I am using Chrome and this only ever happens when after finishing a lesson a long period of load time takes place. Is there a better browser for Duolingo? I just want to keep my streaks alive!