https://bugs.kde.org/show_bug.cgi?id=466029

--- Comment #4 from Porkepix <porke...@gmail.com> ---
(In reply to Vlad Zahorodnii from comment #3)
> mpv disables compositing, so kwin stops providing previews and falls back to
> displaying icons.
> 
> Electron based applications don't provide desktop file hints, so kwin uses
> whatever icons are provided in the X11 windows. Usually, those icons are low
> resolution and look blurry when upscaled. It can be fixed if the application
> provides _KDE_NET_WM_DESKTOP_FILE or _GTK_APPLICATION_ID properties.

I don't know what are desktop file hints, but while Element is indeed an
electron application, Alacritty isn't one.
So, kwin isn't checking `/usr/share/icons/hicolor/` by itself at all? Shouldn't
it?
No idea about _KDE_NET_WM_DESKTOP_FILE or _GTK_APPLICATION_ID but it seems to
be very DE-specific; I think the task switcher should be able to get the
correct pictures by itself with generic locations, shouldn't it?

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