Weirdest damn thing, occasionally my network connectivity was being lost. Not the wifi signal, but just the route to the internet. I finally realized today it happens whenever I do a fresh boot (i.e. first time after system boot) of Heroic Games Launcher.
I am running OpenSuse Tumbleweed and using the Heroic Flatpak. Any idea how I would debug what the heck is going on so I can give a bug report to the Flatpak maintainers? I was poking around /var/log but didn’t see anything interesting.
Did you report that to the lutris devs? That sounds like a very fixable problem that should indeed be fixed.