#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

Package:
kwin
Source:
kwin
Submitter:
Guillermo
Date:
2025-12-11 17:39:03 UTC
Severity:
normal
Tags:
#1114550#5
Date:
2025-09-06 19:35:51 UTC
From:
To:
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).

EXPECTED RESULT

Clicking on the application's icon is expected to show the same previews for
all windows, in the replicated screen and the replicating screen.
#1114550#10
Date:
2025-09-06 20:48:16 UTC
From:
To:
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 :

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
#1114550#21
Date:
2025-09-06 20:48:16 UTC
From:
To:
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 :

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