I have the games and DLC from before the site change and they display correctly (with the +1 DLC above the game itself). Do the DLC show as separate shelf items for you, or just the indicators are gone? And if the latter, do they appear in the download list when you expand the game?

The DLCs are on the download list as normal and not separate items. Download-wise, everything is in order.
It's just the indicators that are gone.

P.S. The indicators are missing in both list and shelf display.

Sounds like they borked something (else) in the site update. I'd recommend putting in a ticket to Support if you haven't yet. They may not have even caught this one.

Did.

We got some fixes.

Great!
Will update the list in a while.

Good work, makes things look more professional. I never had that problem on Palemoon, thankfully.

Yes, and it's a fork of an earlier version of Firefox, so it's likely this never was an issue in Palemoon to begin with.

Now that prices are restored in the Wishlist, I'd like to report that the absence of the currency switch (footer).

Not sure if it qualifies for the GOGWiki page, but it sure is annoying/ counter productive to open your wishlist, notice it, go to the front page, change currency, refresh wishlist page.

And now that I think about it, same goes for promo/ sales pages.

Let me see if I understand. You get the wishlist on the default currency for you region and you have to go to the homepage to select a different currency and going back to your wishlist it now display in the selected currency. What you wish is that there was a currency selector in the wishlist.

I only have one currency so I can't try this things out but if anyone else could confirm it I think it would be at least a minor bug.

New/updated only works in grid mode (not list). Only present when there's an update. (Can't get count otherwise.)

You can check it yourself by setting the gog_lc cookie to a value such as DE_EUR or DE_USD.
I checked it just now using this method and I believe your understanding is correct. It is pretty inconvenient.
That said, I am pretty certain that this will be added to all pages once they are upgrayded. The selector is currently present on upgrayded pages and missing from legacy pages.

Thanks for the reminder. I think I had that bug even before the update but maybe no one has reported it.

Where is Dragonshpere when you need it to test things out?