Created attachment 161425 [details] Demonstration SUMMARY In Konsole, you can create a profile with a semi-transparent background and with it blurred. Everything works fine, exactly until you enable the "Wobbly window" effect in the KDE Plasma settings. Once enabled, any movement of the window causes the blurring to be disabled. After that it is restored, but it starts to flicker a lot. STEPS TO REPRODUCE 1. Create a profile in Konsole with a transparent background and background blur. 2. Switch to this profile. 3. Enable "Wobbly window" effect in settings (Settings -> Workspace Behavior -> Desktop Effects) 4. Move the Konsole window. OBSERVED RESULT Disabling blur, and afterward artifacts (blur starts flickering) EXPECTED RESULT The blur doesn't have to disappear. There should be no flickering. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux, Wayland KDE Plasma Version: 5.27.7 KDE Frameworks Version: 5.109.0 Qt Version: 5.15.10 ADDITIONAL INFORMATION Attached is a video demonstration.
I checked, this applies to all applications that use blur. So it's fair to edit the post and move it to the kwin group
Can confirm this (minus the flickering). Plasma 6.0.3 KF 6.0.0 QT 6.7.0 ArchLinux on AMDGPU
Can reproduce it. Operating System: Arch Linux KDE Plasma Version: 6.1.5 KDE Frameworks Version: 6.5.0 Qt Version: 6.7.2 Kernel Version: 6.10.7-arch1-1 (64-bit) Graphics Platform: Wayland
It affects every Window, where some kind of blur(window decorations and application styles) are enabled.
*** Bug 456473 has been marked as a duplicate of this bug. ***
I can reproduce it on Plasma 6.3 on Arch.
It does not only occur, if the "Wobbly Window" effect is enabled, but also if another animation, like maximize, is running.
Can reproduce on Plasma 6.4.1
I can also repro this on CachyOS + Plasma 6.5.4 + Konsole (with background blur) whenn using Wobbly Windows. The blur does not stop working though, but it just starts flickering immediately after moving. Once you unfocus and focus the window again, the flicker disappears.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/9006
Git commit c5a669bbf1a3d8fa9fea15cce9462eeedded96a3 by Vlad Zahorodnii, on behalf of Jérôme Lécuyer. Committed on 23/03/2026 at 11:21. Pushed by vladz into branch 'master'. effects/wobblywindows: Fix blur flickering after wobble When the wobbly windows effect ends, it triggers `effects->addRepaintFull()`. However, the window had the transformed mask, so blur was skipped for this last full repaint. M +4 -2 src/plugins/wobblywindows/wobblywindows.cpp https://invent.kde.org/plasma/kwin/-/commit/c5a669bbf1a3d8fa9fea15cce9462eeedded96a3
Git commit 919a5838a0b2b436d8e3298e838751deb6d81ae8 by Vlad Zahorodnii, on behalf of Jérôme Lécuyer. Committed on 23/03/2026 at 11:55. Pushed by vladz into branch 'Plasma/6.6'. effects/wobblywindows: Fix blur flickering after wobble When the wobbly windows effect ends, it triggers `effects->addRepaintFull()`. However, the window had the transformed mask, so blur was skipped for this last full repaint. (cherry picked from commit c5a669bbf1a3d8fa9fea15cce9462eeedded96a3) M +4 -2 src/plugins/wobblywindows/wobblywindows.cpp https://invent.kde.org/plasma/kwin/-/commit/919a5838a0b2b436d8e3298e838751deb6d81ae8
Just compiled kwin with the provided patch. The issue is still here, like in the provided video from 2023. Except the « flickering » at the end when mouse is hovering. (I never had this issue). So I reopened this bug. Operating System: Gentoo Linux 2.18 KDE Plasma Version: 6.6.3 KDE Frameworks Version: 6.24.0 Qt Version: 6.10.2 Kernel Version: 6.19.9-gentoo-dist (64-bit) Graphics Platform: Wayland Processors: 8 × Intel® Core™ i7-9700K CPU @ 3.60GHz Memory: 32 Gio of RAM (31.2 Gio usable) Graphics Processor: AMD Radeon RX 7800 XT
You don't have the fix yet.
(In reply to Nate Graham from comment #14) > You don't have the fix yet. Do you mean that there is another fix that is not listed here? I need the fix https://invent.kde.org/plasma/kwin/-/commit/919a5838a0b2b436d8e3298e838751deb6d81ae8 and another one ? Where is the other one then, I would like to test it, since I can recompile what I want. I run Gentoo for this purpose.
Tried on my laptop (and on my desktop), Plasma 6.6.4, still not working. I still have the following, also reported by OP. OBSERVED RESULT Disabling blur EXPECTED RESULT The blur doesn’t have to disappear Operating System: Gentoo Linux 2.18 KDE Plasma Version: 6.6.4 KDE Frameworks Version: 6.24.0 Qt Version: 6.10.3 Kernel Version: 6.19.11-gentoo-dist (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 7640U w/ Radeon 760M Graphics Memory: 32 Gio of RAM (30.6 Gio usable) Graphics Processor: AMD Radeon 760M Graphics