SUMMARY If "Highlight windows when hovering over task tooltips" is enabled, scrolling in tooltip window thumbnails will cause window re-activated even if the highlight is still the same. STEPS TO REPRODUCE 1. Enable "Show tooltips" and "Highlight windows when hovering over task tooltips", and enable grouping. 2. Open many Konsole windows to make the scrollbar appear 3. Scroll in the tooltip OBSERVED RESULT The same window is flickering when scrolling in the tooltip, when the highlight is not changed. EXPECTED RESULT No flickering if the highlight is not changed. SOFTWARE/OS VERSIONS Information for package plasma5-desktop: ---------------------------------------- Repository : unstable-kde-frameworks Name : plasma5-desktop Version : 5.23.80git.20211207T014525~b8d9ed8e5-ku.80.1 Arch : x86_64 Vendor : obs://build.opensuse.org/KDE:Unstable Installed Size : 8.8 MiB Installed : Yes Status : up-to-date Source package : plasma5-desktop-5.23.80git.20211207T014525~b8d9ed8e5-ku.80.1.src Summary : The KDE Plasma Workspace Components
The description is wrong, but the visual glitch must be fixed.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/735
Git commit 8409043dd3e9d59648241217780af1452baf7df3 by Nate Graham, on behalf of Fushan Wen. Committed on 09/12/2021 at 17:40. Pushed by ngraham into branch 'master'. taskmanager: Avoid flickering when scrolling in task tooltips Using `QTimer::singleShot` to call `Backend::updateWindowHighlight` is effective to avoid unnecessary window highlight updates when scrolling in task tooltips. M +2 -1 applets/taskmanager/plugin/backend.cpp https://invent.kde.org/plasma/plasma-desktop/commit/8409043dd3e9d59648241217780af1452baf7df3