Not sure if this qualifies, but Bear With Me: The Complete Collection is missing two achievements. Eye of the Seagull is broken so that is not possible and that means True Detective is also not possible.
I have reached out to the developers (broken links everywhere, not possible to contact them) and finally to Modus, who is the distributor. Their answer is that the achievements will not be fixed on GOG because of ... limitations at Epic Games Store?
I guess they do not care enough to even check which non-Steam store I am talking about. At no point did I mention Epic in our conversation. I clearly mentioned GOG and even gave GOG links in the request so there is no excuse for the mix up.
Their response is attached if someone can make heads or tails of it.
I did respond politely asking for clarification as Epic Games do not have achievements and my request was about GOG, not Epic. Reminding them I was asking to fix an existing achievement that is broken, not to implement a whole achievement system to a platform I do not use. There has been no response to my request of clarification.
welcome in the world of competencies..
maybe it will become standard that such things will be processed by KI systems in the future and not by unwilling humans, who are not intrested to do their job properly.