I'm also having the exact same issue with one of my courses. Just wondering if you found a solution for it?
I've also contacted VMware support however they still haven't got back to me.
Have you tried accessing this in a private browser window?
Thanks for the assistance, I tried private, and tried multiple browsers.
Support ended up fixing it, so if anyone else has this issue email myLearn_support@vmware.com they may take a few days to get back to you.