Nope. I also suffer from this. Gnome Ubuntu 17.04, csgo and payday2 minimize when someone talks to me on steam chat and a pop windo appears...
I did find this though: https://steamcommunity.com/app/221410/discussions/0/626329820878430425/:
Thanks for the tip, that got me towards the fix :)
Firstly, this is "by default" behaviour of SDL. It can be disabled in
the code by setting SDL_HINT_VIDEO_MINIMIZE_ON_FOCUS_LOSS to 0. It'd
be nice if there was a setting for doing so in-game.
However, since we can't edit the code, we have to use a different
approach. SDL also recognises environmental variables. So instead of
running Civ5 from inside Steam, we run it from the command line.
You'll still have to have steam running, first. Then navigate to the
directory containing Civ5XP. Then run
Alternately, you can export it in some larger scope.
Actually you can use environment variables in Steam. Right click the
game, select properties, then set launch options. Put this in the
Then click OK and you're done.
I've avoided this by switching to lxde or xfce. Kde doesn't do this, it's a gnome 3.22 thing