[kwin] [Bug 459735] Tabbox can show a different icon from the Plasma Task Manager, which is weird and confusing

[Nate Graham]

https://bugs.kde.org/show_bug.cgi?id=459735

Nate Graham <nate at kde.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Product|kde                         |kwin
           Keywords|                            |usability
     Ever confirmed|0                           |1
            Summary|Icon and audio indicator    |Tabbox can show a different
                   |not showing in panel for    |icon from the Plasma Task
                   |GameMaker Studio 1.4        |Manager, which is weird and
                   |applications                |confusing
          Component|general                     |tabbox
           Assignee|unassigned-bugs at kde.org     |kwin-bugs-null at kde.org
             Status|REPORTED                    |CONFIRMED
                 CC|                            |nate at kde.org

--- Comment #1 from Nate Graham <nate at kde.org> ---
> The panel displays a wrong icon, but the window switcher (alt+tab) displays the correct icon.
This is caused by a quirk on X11; the Task Manager icon uses the icon from the
app's .desktop file, while the Task Switcher allows the window itself to define
a custom icon, and if it does, it displays it. If it doesn't, then it falls
back to the .desktop file.

For consistency's sake, we should probably stop doing this. We've gotten tons
of bug reports over the years and I think allowing these icons to diverge more
harm than good.

> and does not show an audio indicator if the application produces sound.
That's a different issue, and is most likely caused by the app not using
PulseAudio or PipeWire to produce the sound. Our detection only kicks in for
apps that do use one of those libraries.

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