https://bugs.winehq.org/show_bug.cgi?id=35525
--- Comment #5 from Henri Verbeet hverbeet@gmail.com --- (In reply to comment #4)
Is there any chance that somebody within the Wine team could contact Valve about this? Just so that this issue could be resolved easily, as probably both parties should want to find out who's doing what wrong
I'd be happy to answer any questions Valve may have about this, and explain what I think is likely to be the issue, but I don't think I have a contact inside Valve for the Linux Steam client.