[Bug 57622] New: WM_CLASS reports default value when starting a program with 'explorer /desktop'

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57622

Bug ID: 57622
           Summary: WM_CLASS reports default value when starting a program
                    with 'explorer /desktop'
           Product: Wine
           Version: 9.0
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

When launching a program with "wine explorer /desktop=app program.exe" the
WM_CLASS is set to 'explorer.exe' instead of 'program.exe'

As a result, I cannot assign the program a specific icon for example in GNOME
because each different 'progamXYZ.exe' reports back its WM_CLASS as
'explorer.exe' and it's not possible to distinguish between those.

When starting the program directly with "wine program.exe" the WM_CLASS is set
to "program.exe", so setting a proper icon in a .desktop file is possible.
But some apps need a virtual desktop, so "wine explorer /desktop=app
program.exe" should behave the same and report a WM_CLASS "program.exe".

As an alternative, bug #50095 gives a different approach: allow WM_CLASS to be
set by an environment variable.