[Bug 53826] New: Attempting to install / update battle.net fails with Qt error

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53826

Bug ID: 53826
           Summary: Attempting to install / update battle.net fails with
                    Qt error
           Product: Wine
           Version: 7.19
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

The install program Battle.net-Setup.exe runs for a while, then fails with a
pop-up error message of

"
This application failed to start because it could not find or load the Qt
platform plugin "windows" in "".
   "

Multiple reports of this are in as of Oct 22:
https://eu.forums.blizzard.com/en/wow/t/battlenet-client-doesnt-start-on-lin...

This was apparently triggered by Blizzard doing something to Battle.net.