So I have a few accounts connected, including Steam. The total library is about 900 titles. After some time of using Galaxy 2.0 I've noticed that games at Steam account can't be hidden: the icon disappears, but the space is left unfilled, unlike it works for every other account. After you switch tabs the game you've tried to hide appears where it was.

This option used to work for some time though, as I see some games from Steam libraries are still hidden (I've used Galaxy 2.0 for only about a day)

Your Steam profile page generally lists all the games you’ve been playing and suggests what number of hours you’ve spent in all of them, that specialize in what you’ve been gambling in the remaining two weeks. Steam profiles was once public by default, however Valve made them private via default. Still, you may have made it public to work with a third-birthday celebration service that reads facts from your Steam profile, like IsThereAnyDeal, which scans your wishlist for games and lets you know if they’re on the market on different recreation shops.