idbeholdME: Very much this. If you use Galaxy to install a game and check the option "Create desktop shortcut", it will create the circular game icon which opens Galaxy when using it. Just delete/don't create this icon and create your own by creating a shortcut on your desktop pointing straight to the game exe.
It kinda makes sense IF you are installing the game with Galaxy.
However, I was under the impression that even with the (updated) offline installers, the shortcuts would still try to run Galaxy, IF the Galaxy client was installed.
However, maybe the information I read was wrong, and this was only about games installed WITH the Galaxy client. I guess I could try it at home today.
Then again I am still unsure why I would want to use Galaxy, as I mostly play the older games which are not actively updated anymore, and don't care about achievements and no real need for cloud saves either. I guess to try out GWENT?
But at least I wouldn't have to avoid Galaxy anymore either, IF it won't automatically load when I run my offline GOG games.