skeletonbow: When I log in, the page reloads and continues to show "Log in" at the top of the page instead of "My Account", and the rest of the page acts as if I am not logged in at all, games I own showing the price instead of "OWNED" etc. Clicking on "Community" brings up the main forums page and magically "My Account" shows up in the navigation bar at that point indicating I'm logged in, and then clicking on the gog.com logo to go back to the homepage I just came from - now the homepage has me logged in correctly and everything works from that point onward.
When I first log in and it does not show me as logged in, I see that GOG informational banner as mentioned, and that never ever shows up when I am logged into the site. After I visit the Community page and come back as described above and it indicates I am logged in - the info banner is gone, and games I own now show up as "OWNED".
Strangest thing...
OK, I did some testing repeating your steps, and I can confirm your own experience and findings:
(1) Logging in from the front page, results to it
not acknowledging it.
(2) Opening secure.gog.com/ forum shows me as logged in.
(3) Reopening the front page results in everything being as should. But I still see that banner (the more I think about it, the more I'm convinced that it has to do with the login system change, as I'm pretty sure that I used to
not it before).
I didn't notice it until now, as I usually log in from the forum.
It resembles the problem I had when I was using the old GOG ruleset for HTTPSEverywhere, but differs at point (3), and disabling the add-on doesn't change the behaviour of the site.
There's definitely something going on here.
I can also confirm that if I keep my GOG cookie, the waiting times during login are much-much reduced.
The question is should we submit a support ticket or wait and see if things change down the road?