I installed Sandboxie on my PC
I ran Steam regularly and logged into my main account
I ran Steam in Sandboxie and logged into my alternate (second) account
I then ran the example from GMS2 regularly (works, can create lobbies/press shift+tab, etc)
I then copied the parameter string to my clipboard:
W://windows/Runner.exe -debug_steamapi -game X:/SteamworksGmlExample_24BF7CD3_VM\SteamworksGmlExample.win
I ran that command in my Steam Sandboxie, it spawned another game runner
However, this game runner is refusing to connect to my alternate Steam account. I can't press shift+tab to view Steam, can't create lobbies or refresh lobbies. But I can clearly see the runner and Steam are both running in the same Sandbox environment:
Any ideas on why the sandbox game isn't connecting to my second steam client?