Hello @alexzk1, I initially suspected that you're seeing an issue with the Steam Linux Runtime - Soldier container environment which blocked Proton from starting, but since Proton 5.13 works fine, and that's run in the same container environment, it hints the issue is elsewhere.
That said, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/150#issuecomment-903110891.
proton 5.13x2 2021-08proton experimentalx1 2021-08PROTON_LOG=1).x1 2021-08
Just restarted Elite Dangerous (359320). Steam made update of proton experimental and soldier, as it was posted 5 hrs ago while I played.
Game silently do not run any more + logs are empty (PROTON_LOG=1). I guess it is some mess with python launching there.
Setting proton 5.13 runs the game.