I don’t know whether any maintenance will still be done here but in case it is:
In one of the exam questions (L2Practice #105) one of the answers is seemingly randomly creating links to CR sections referenced in the explanation. I checked the question and answer text and it shouldn’t generate one of the answers as a CR link. Attached is a screenshot showing the answer as a link and in the bottom left what it links to when I mouse-over the link. When I refresh the page the link disappears. If I then go to the address line and simply refresh by pressing enter it shows up again.
Another user apparently had the problem that some answers were in the wrong language.