That actually isn’t true. There was a bug that was introduced with patch 8.1.5 that is very similar to this one. As far as I can find, it was fixed within the first week. So no, it hasn’t existed for 3 years.
9.2.5 caused a number of issues with some NPC’s and quests, including a bug with symptoms similar to the one from 8.1.5.
Then, as now, it is being worked on. We hope to have it resolved as soon as it can be. The workaround is provided because it has worked for some. It may not work for everyone and we’ll need to wait for a resolution to be implemented.
I understand your frustration, Elhyas, but posting in the manner that you have towards your fellow players is not acceptable. They are simply trying to help and even if you feel their suggestions, advice and other discussion is not, there is never any reason to post how you have.