It is not a solved problem. Play some games in HDR on a daily basis and their HUDs and character portraits will burn in. As simple as that. I have an AW3423DWF that did just that after 2.5 years of use.
How many hours are you playing the same game to get burn in? I've never managed that
Factory games like Satisfactory and Factorio see players with thousands of hours on the games and those have static HUDs that would likely burn in.
I wonder if this is an HDR problem? I have played these for hundreds of hours and I do not have the same issue. Also mine is 1 gen newer so it could be related to that as well.
I also wonder what brightness people who are running into burn in issues are runing these monitors at. Surely using settings apropriate for a effectively being outdoors vs. a dimmed room don't get the same level of burn in but it would be interesting to find out if the relationship between brightness and burn in was liniear or if reducing brightness only a little bit can already prevent most of the problem.
Nothing out of the ordinary, to be honest. If you read forums such as reddit, you'll notice that these are not unique issues but widespread for the generation of panels in question.
Well, the burn-in is a function of brightness, so surely HDR usage contributes to it as it highlights certain gameplay or UI elements close to max brightness of the panel.
I guess those games have artificially bright HUD since they weren't designed for native HDR experience.