https://bugs.winehq.org/show_bug.cgi?id=43607
--- Comment #9 from Michael Müller michael@fds-team.de --- With Wine Staging you can use the following syntax:
WINEDEBUG=+AkibaUU.exe:relay,+AkibaUU.exe:seh,+AkibaUU.exe:tid
This enables the debug channels only for the specified application and should not affect Steam.