So when i open any link in game, that will open my browser (firefox), steam overlay for some reason will launch for it too, but only if firefox is not already running. Then steam is thinking that my browser is game that had that link i opened.
It happen to me with:
Counter-Strike: Global Offensive
SpaceChem
Frozen Synapse
So i guess, it's problem with overlay and not particular game. In screenshot you will see that steam thinks that my browser is spacechem. Restarting browser fixes issue. Killing overlay process causes restart of it.
First of, this bug happen in windows version of steam client, but im reporting it here, because you don't have any option to report bug in client on your site (https://support.steampowered.com/ and https://help.steampowered.com/).
So when i open any link in game, that will open my browser (firefox), steam overlay for some reason will launch for it too, but only if firefox is not already running. Then steam is thinking that my browser is game that had that link i opened.
It happen to me with:
So i guess, it's problem with overlay and not particular game. In screenshot you will see that steam thinks that my browser is spacechem. Restarting browser fixes issue. Killing overlay process causes restart of it.