It is concerning that it is almost a year and it still hasn't gone away.
The 1st listing issue that one of my listings received went away after around a month, give or take. Didn't try to contest this one since I kind of deserved it that time. Even though the listing issue itself went away after a month, it continued to impact the listing's search algorithm performance for the next 6 months or so.
The second time I got a listing issue was due to "urging a guest to cancel", that one was tricky to get it removed, because while I acted in the best of intentions (tried to give a guest a full refund, and helped the guest to cancel by talking to Airbnb support), for some reason the support agent put that on my account. It was tricky to get it removed, but I did eventually succeed in getting it removed. In retrospect, it is probably not a good idea to help a guest to cancel a reservation (that the guest didn't want) to get their refund, it made me question that practice lol since it was a really sweaty exercise.
The third time I got a listing issue it was related to a 1* review I got. After I was able to successfully contest that retaliatory review and get it removed, so did the listing issue.