Similar bugs happened every week or month.
I think GOG's whole infrastructure is broken and requires so much manual work, so that many mistakes happen.
I guess this is the main reason why they can only handle so few releases. If a staff member needs to spend half a day to do all the manual work for a single game... Curation my a**, they just do not have enough resources to make more releases - especially of niche games with less sold quantity - economic.
Remember until a few years ago, when you bought a new game the corresponding forum was marked as "Favorite" automatically? This is just one little example of GOG's quality slowly going down the drain.
The release posts are often sloppy, links lead to 404, download links are missing, the release post does not appear in the general forum, they forget to create a sub-forum for a new release and so on...