Adding two instances of the same GOG game not working properly

[DocKDE]

Describe the bug
I've installed two instances of the same GOG game with Lutris (they have different mods installed). They are picked up by BoilR and added to Steam but when I launch the games, they both start one of the game version with the other not being accessible.

To Reproduce
Steps to reproduce the behavior:

1. Install Game from GOG via Lutris and add it to Steam via BoilR
2. Install second instance of same GOG game via Lutris, start BoilR, select both games to add to Steam and click the add button
3. Open up Steam and select the second instance of the game.
4. Verify that actually the first version of the game is started.

Expected behavior
I would expect to be able to start both instances of the game from within Steam and not have one of them be a link to the other.

Screenshots
If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: [e.g. iOS, Windows, Linux, Steam Deck]
• BoilR Version [e.g. v.1.4.5]
• Launcher (if applicable)

Additional context
Add any other context about the problem here.

[PhilipK]

Do you have any idea what the difference in the command should be? If you did this manually instead of using BoilR what would the difference be in what you input in steam?

[DocKDE]

I must admit, I don't know what BoilR is doing behind the scenes so I'm not sure what the difference to doing this manually would be. Is it equivalent to adding a non-Steam game in the client?