I had this before they removed the Hard West 2 dlc. afaik it's not a widespread problem, and I've seen this at least once many years ago reported on the forum. I dunno what causes it, but it's not any 3rd party scripts or blockers because I've tried disabling all the plugins before to no affect. It must be a javascript problem or something (I've taken a peek with browser dev tools and the correct games appear to be returned by the server, but the rest of the page doesn't load and no error occurs).

The hidden games pages shows the correct number of games in the heading, but the game "cards" just refuse to appear so you can't view the products. A pain if you're hoping to access a game via browser you once hid, which is why I urge others not to use the hide function lightly.

Treat hide like a permanent delete, people.

Thank you for the ample response. In my case, the bug appeared in the last few months, but I don't know if it's before or after they added the Hard West 2 DLC, hence my suspicion to be related to that. I have 25 hidden games, which are mostly freebies I have no interest in.

No, it's not. Click on "Collection" and there you can select your hidden items.

Read my posts better, please. Some rare users have a bug which gives a blank result on that very page you showed.

This is why I warn people not to use the hide function lightly. One bug and you might lose access to your hidden games.

Unless it's a game that I am morally opposed to, I always claim it, even if I'm not sure I'll ever play it. The reason I do this is because I figure that someday, my opinion may change or I may just be bored and want something different to play. Plus, the fact that I permanently own a game that I didn't even have to buy is an added plus!

Whenever I see such bugs and glitches mentioned, I wonder if there are any matches in regard to how these "rare users" use GOG (e.g.: if they maybe all use some third party software (userscripts) like AF, and/or similar).
Because I don't use any TPS and I never encountered any of these rare bugs, so far.
Pure coincidence? Sheer luck?

If it were a script causing it, removing the script would bring it back.

And no - whilst I'll use Adalia and Barefoot the others I've seen reporting it are the type of user here who probably aren't even aware of their existence.

If it is drm-free and not a hassle to get, yes. Even if the game looks meh, I might get it anyways in case my judgment is wrong and I read somewhat that the game is just AMAZING and I really ought to play it. Don't have time to play those right now, but I'll retire at some point.

If it has drm, it depends. If someone else really wants to play the game with me, probably (at some point, I might have a spare computer that I don't mind installing drm-infested messes on, though it hasn't happened yet, I'm pretty conservative with what I install on my computer). If it's just me, no.