https://bugs.winehq.org/show_bug.cgi?id=43315
--- Comment #8 from Robert Walker bob.mt.wya@gmail.com --- RE my previous comment. After applying the Staged patch...
The reported Steam Client details (via the About Steam popup):
Built: Jul 6 2017, at 10:21:01
for the affected version of Steam.
Which is basically what the bug report title _should_ reference.