I'd like to access game specific forums for games I don't own yet, and usually I'd just go to the Community hub and type in the name of the game in the search field on the left, under "Game Specific Forums" - but there is no search field anymore. Did they remove it or is that a glitch due to the sale or my browser?

Now that section only lists the games I own, and while at the end of the list, there is a link "show all 738 forums", if I click on it, nothing happens other than the link just vanishing.

Does anyone else experience this, too?

And are there alternative ways to get to the game specific forums of games you don't own? Maybe I overlooked them, but I haven't found a link to those on the store pages yet ...

Alternatively you can try using this
https://www.gog.com/forum/general/the_what_did_just_update_thread/post9235

Not the smartest move to cripple your website functions at the time when the most potentially new customers come to check it out. And to hinder research into games at the same time when you want to encourage people to buy them. Less forgiving customers than us GOG veterans and fanboys might misinterpret it in very negative ways ...

But your suggestion actually works as a workaround, thanks a lot!

Agreed... GOG if you're worried about intensive server traffic, why not make the game forum list static and cached for the duration of the sale or something? As is where it just looks broken (including an all games link that raises a 404) just looks broken.

Seems like they also restricted the wishlist functions now. Before, I was able to display any wishlist items that are currently discounted in the sale, now that option is gone. Bad, GOG. :(

I also think that they are worrying too much. You have minimum 12 hrs for each game/bundle to buy. This is not insomnia sale (which was great by the way) where a game might be gone in a few minutes and everybody constantly is pushing F5.

Another solution:
http://www.an-ovel.com/cgi-bin/magog.cgi?ver=522&scp=gdspur&dsp=i (click on the forum button for the forum, on the game name or image for the game page).