The one review I made gets shown to me under the "verified owner" tag.
However: that review is from four years ago, so if the bug/glitch only affects reviews from November onwards, that may not be saying much.

This sure looks related. If you're not shown as owning any games, you can't be shown as being a verified owner of any...
Wonder if they changed something, maybe in the API and most probably for Galaxy, so even though it's clear what should be changed back to fix the issues, they don't want to because it'd affect Galaxy...

I'm no expert, but wouldn't a recode of the API also explain the update flag failures as well? Almost like someone completely redesigned part of the backend and for whatever reason couldn't revert/roll back the changes once problems started to crop up.

Different timing though...
Or maybe not. Didn't these other problems start appearing around the time when the one with the update flag started getting fixed?

In case anyone is wondering about a decreased game count in the library, at least for me the advertising entry for Hard West 2 has been removed today.

Yeah i notice it now.
So that is what was gone today when i got a freebee and didn't have my game count go up.
So do we still have the dlc if we buy the hard west 2 game?

Library counter down by 1 once again, this time due to Queen's Wish 2: The Tormentor's Hint Book and Extras' consolidation with the base game.
Hint Book and Extras was a separate library entry, and has now been relegated/moved to the base game's 'Extras' section.

Double entries of Wolfenstein 3D.

With a difference in size. One's 18 MB, the other 12 MB.

Maybe they re-added the Spear of Destiny levels?
Wasn't there a controversy lately about those being removed?

I don't know whether the expansion was listed prior to today, but now it is (attachment):

The 12 MB installer (28045) is from the library entry that's marked "new". This one installs Wolfenstein 3D and nothing else. No Spear of Destiny at all.

The 18 MB installer (58806) doesn't seem to work. It simply doesn't do anything after choosing the directory. Installing this via Galaxy worked, though. This installs Wolf3D and SoD, but not the FormGen addons.

So better hold on to the old installer backups, if you have them, folks.

Both offline installers work for me, as long they are not both installed at the same time (I guess they share registry entries). Separate SoD with both mission packs still missing though.

I can confirm this. This time I installed the 18 MB package on my C drive as opposed to my D drive, and now it works as intended.

EDIT: And now I have a separate entry for Spear of Destiny. Which includes the FormGen addons. :D

Nothing new. Standard bug (probably since 2008) that can affect any thread with mod-deleted posts, which nowadays is the case for a lot of threads on GOG.