Bug#1114550: kde-plasma-desktop: "No Windows" when clicking on an task in the KDE task manager with "Shows large window previews" and replicating another screen

[Aurélien COUDERC <libre@coucouf.fr>]

control: reassign -1 kwin
control: forwarded -1 https://bugs.kde.org/show_bug.cgi?id=489849


Dear Guillermo,


Le 6 septembre 2025 21:35:51 GMT+02:00, Guillermo <guillermo@lopezalejos.es> a écrit :
>
>Dear Maintainer,
>
>I found the following problem after upgrading from Debian Bookworm to Debian
>Trixie.
>
>STEPS TO REPRODUCE / PRECONDITIONS
>* A system with two screens (in the case that I tested, a laptop and an HDMI
>display).
>* One screen replicates the other (in my case, the HDMI display replicated the
>laptops built-in screen).
>* "Icons-Only Task Manager widgets" configured with behavior "Shows large
>window previews".
>* There is an application with more than one windows open (for example, several
>Firefox windows).
>
>OBSERVED RESULT
>
>Clicking on the application's icon shows previews for all windows in one of the
>screens (the built-in screen in my case), and shows "No Windows" in the other
>(the HDMI display).

thanks for reporting this issue.

There's an open bug report about it upstream so I'm linking to it. It's unfortunately not fixed yet.


Happy hacking,
--
Aurélien