https://bugs.winehq.org/show_bug.cgi?id=43111
--- Comment #1 from Sebastian Lackner sebastian@fds-team.de --- Thanks for reporting this issue.
Regarding the installation of Steam in the development version of Wine: Have you tried to switch the Windows version to XP and to install corefonts (either system-wide, or inside of your current prefix) before starting the installation? Also please keep in mind that you will have to pass "-no-cef-sandbox" if you need access to the Steam store (this applies to both the development and Staging version).
Even if you cannot reproduce this issue with the development version, please try to provide some more information how to reproduce it with Wine Staging. Are you testing with a 32-bit or 64-bit prefix, and are you aware of any free game which can be used to reproduce it? What is the effect when the problem occurs, is there some crash dialog for example?