Hello @tele1, it sounds like https://github.com/ValveSoftware/steam-for-linux/issues/6046 is interfering with your troubleshooting. As an alternative, you should be able to completely close Steam, then run PROTON_LOG=1 steam from a terminal.
run
PROTON_LOG=1 steamfrom a terminal.
It works. Thank you for your help. :smile:
I made a task for myself.
I download Blender because it is under the GNU License.
Because I can advertise, download for free, edit, debug it, and no one can ever put me in jail for it.
https://www.blender.org/download/
( opens the window and closes )
2.1 I needed change Win. to Win. 8.1 inside
2.2 I run installer
2.3 I found .exe file
/home/user_name/.wine/drive_c/Program Files/Blender Foundation/Blender 2.93/blender.exe
2.4 I added game ( app :smile: ) to Steam