Now, when the slideshow wallpaper changes, the accent color only changes when plasmashell is restarted. I did a git bisect and found that it's one of the commits in https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/1638, but couldn't pinpoint the exact one because those commits are quite inter-related and at plasma-workspace doesn't build when some of them are HEAD.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/1808
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/972
Git commit d2e4745813d33c8471f42383b45842d987a488e1 by Fushan Wen. Committed on 06/06/2022 at 00:51. Pushed by fusionfuture into branch 'master'. desktoppackage: only depend on `repaintNeeded` signal to update wallpaper colors This avoids extracting colors from wallpapers during transitions. M +1 -11 desktoppackage/contents/views/Desktop.qml https://invent.kde.org/plasma/plasma-desktop/commit/d2e4745813d33c8471f42383b45842d987a488e1
Git commit b8c7ba8a22033e07c7020e0e296f570a587ecd42 by Nate Graham, on behalf of Fushan Wen. Committed on 06/06/2022 at 01:05. Pushed by fusionfuture into branch 'master'. wallpapers/image: update accent color when image finishes loading FIXED-IN: 5.26 M +4 -0 wallpapers/image/imagepackage/contents/ui/main.qml https://invent.kde.org/plasma/plasma-workspace/commit/b8c7ba8a22033e07c7020e0e296f570a587ecd42