SUMMARY WindowView effect's implementation binds this label's visibility to `heap.count === 0`, where `count` is a window heap's an alias to its Repeater::count property. Instead it should be kind of a visibleCount: something like a children and visibleChildren duo in Items. STEPS TO REPRODUCE 1. Open at least one window on a desktop. 2. Minimize all windows. 3. Activate "Toggle Present Windows (Window class on current desktop)" action (Ctrl+F7 by default). OBSERVED RESULT Empty blurred screen. EXPECTED RESULT Placeholder with text "No Windows". SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE: git-master Qt Version: 5.15.6 Kernel Version: 5.19.8-arch1-1 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz Memory: 31.3 GiB of RAM Graphics Processor: NVIDIA GeForce GTX 970M/PCIe/SSE2 Manufacturer: ASUSTeK COMPUTER INC. Product Name: G752VT System Version: 1.0 ADDITIONAL INFORMATION Note: Ctrl+F7 mode seems to be using special filtering technique, which is why this glitch isn't present (har har) in other flavors of this effect.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/2964
Git commit 8ac49010685b5b9883db53142be55ea08a0abae3 by ivan tkachenko. Committed on 20/09/2022 at 09:35. Pushed by ratijas into branch 'master'. effects/windowview: Turn placeholder on when there are actually no visible windows This may happen when all windows are minimized, and the effect was started in "Window class on current desktop" mode (Ctrl+F7). FIXED-IN: 5.26 M +10 -0 src/effects/private/qml/WindowHeap.qml M +2 -1 src/effects/windowview/qml/main.qml https://invent.kde.org/plasma/kwin/commit/8ac49010685b5b9883db53142be55ea08a0abae3
Git commit 797bd80d0749e10b8fe1a864ab9f068e3746dad9 by ivan tkachenko. Committed on 20/09/2022 at 12:27. Pushed by ratijas into branch 'Plasma/5.26'. effects/windowview: Turn placeholder on when there are actually no visible windows This may happen when all windows are minimized, and the effect was started in "Window class on current desktop" mode (Ctrl+F7). FIXED-IN: 5.26 (cherry picked from commit 8ac49010685b5b9883db53142be55ea08a0abae3) M +10 -0 src/effects/private/qml/WindowHeap.qml M +2 -1 src/effects/windowview/qml/main.qml https://invent.kde.org/plasma/kwin/commit/797bd80d0749e10b8fe1a864ab9f068e3746dad9