https://steam.madjoki.com/apps/banned
according to this, nothing got removed yesterday. maybe it's just a bug between steam and community and it will fix itself.

wow thats a lot of games

In my opinion, maybe one of you're game you have got banned on steam, you still have it, but banned game don't give +1.

🤔

I think there was something with IsThereAnyDeal...
If you have your library synched with the site you get notified or can look it up when a game from your account gets revoked. But you can't enable that feature after the fact... you need to have it synched beforehand.

I never used that feature so I'm not entirely sure how it worked.

It probably helps if you've been using any site that tracks your library progress, like completionist etc, because when they update your data you'll learn what packages got removed. Other than that it'll be hard to figure out.

If it was an outright revocation you probably would have gotten a notification from steam that a game was removed and why, so maybe something changed with some distributable or other, some demo or beta branch being discontinued.