http://bugs.winehq.org/show_bug.cgi?id=33845
--- Comment #7 from Levan levanchelidze@gmail.com 2013-06-20 11:40:44 CDT --- (In reply to comment #5)
Have you tried to run Steam with the -no-dwrite option? Maybe there is some text inside that white screen. Read more at the appdb: http://appdb.winehq.org/objectManager.php?sClass=version&iId=19444
this is what inside of the white box
http://i.imgur.com/g08hIHz.png