Hi Norbert, thanks for your very prompt reply, and my apologies for failing to reply in kind.
On Wed, 10 Nov 2021 15:41:25 +0900 Norbert Preining <norb...@preining.info> wrote: > > Can you please test 5.23.3 which I have uploaded just today. It has > several fixes included concerning exactly this problem, as far as I > read it. > I use "testing", and AFAICT 5.23.3 hasn't yet migrated there. I added sid to the sources-list, and upgraded kde-plasma-desktop, which did the following: [UPGRADE] kde-plasma-desktop:amd64 5:114 -> 5:115 [UPGRADE] kwin-common:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] kwin-data:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] kwin-x11:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libcolorcorrect5:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libkfontinst5:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libkfontinstui5:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libkwin4-effect-builtins1:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libkwineffects13:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libkwinglutils13:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libkwinxrenderutils13:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libkworkspace5-5:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libnotificationmanager1:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libplasma-geolocation-interface5:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libtaskmanager6abi1:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] libweather-ion7:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] plasma-desktop:amd64 4:5.23.2.1-1 -> 4:5.23.3-1 [UPGRADE] plasma-desktop-data:amd64 4:5.23.2.1-1 -> 4:5.23.3-1 [UPGRADE] plasma-workspace:amd64 4:5.23.2-1 -> 4:5.23.3-1 [UPGRADE] plasma-workspace-data:amd64 4:5.23.2-1 -> 4:5.23.3-1 With these in place, the problem did not improve. Thanks, Shai.