https://bugs.winehq.org/show_bug.cgi?id=43364
--- Comment #3 from fjfrackiewicz@gmail.com --- (In reply to Xanth from comment #2)
I would, but I'm not sure how to get a terminal output.
You can redirect your terminal output to a text file like so:
wine steam.exe &> steam_terminal_output
That will create a text file called steam_terminal_output.txt in whatever directory you ran that command in.
Once you start Steam, start the game and reproduce the error you have mentioned in your original report. Once you're done, exit Steam and attach the text file generated by the command I wrote above.
If the text file is too large, just zip it up and attach it to this bug report.