506622 2025-07-05 09:07:53 +0000 Losing one of the custom tiling location at restart or logout 2026-06-01 20:32:10 +0000 1 1 4 Plasma kwin Custom Tiling 6.4.0 Fedora RPMs Linux RESOLVED FIXED NOR normal --- 1 bruno kwin-bugs-null dajake1337 kde.tmapu mr.yamamoto notmart https://invent.kde.org/plasma/kwin/-/commit/59dfbab76378b2b6c4df39c75ce0b75d9b1d26de 0 oldest_to_newest 2438652 0 bruno 2025-07-05 09:07:53 +0000 SUMMARY When creating a custom tiling layout, one of the zones consistently disappears after logout or restart. Zones are created using Meta+T, it works as expected during the session but one zone at the bottom of the secondary monitor in portrait mode always disappears after logout or restart. STEPS TO REPRODUCE 1. Create a custom tiling layout. 2. Restart or logout. 3. Meta+T shows one zone missing from before restart. OBSERVED RESULT One zone at the bottom is missing. EXPECTED RESULT All 3 zones from before should be there. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora KDE 6.4.2 KDE Plasma Version: 6.4.2 KDE Frameworks Version: 6.15.0 Qt Version: 6.9.1 ADDITIONAL INFORMATION 2438741 1 mr.yamamoto 2025-07-05 16:26:12 +0000 I'm observing the same behavior, and it's also happening to my monitor in portrait mode. It's my leftmost monitor and I'm on plasma 6.4.1 2444433 2 kde.tmapu 2025-08-01 09:07:41 +0000 Exact same situation here - left-hand portrait monitor constantly loses the tile layout, happening since KDE 6.4.x. 2444910 3 dajake1337 2025-08-03 13:26:19 +0000 I too experience this. Same setup. Left hand portrait Monitor doesn't save tiling config. Also since 6.4.x 2519511 4 bug-janitor 2026-05-31 11:24:12 +0000 A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/9310 2519657 5 vlad.zahorodnii 2026-06-01 07:42:12 +0000 Git commit 9de61e188c6b583386a3734b7f51d3658b9fbf1c by Vlad Zahorodnii, on behalf of Hynek Schlindenbuch. Committed on 01/06/2026 at 07:22. Pushed by vladz into branch 'master'. tiles: fix incorrect split of single tile The bug could be reproduced like this: - Load the 3 column custom tiling layout. - Delete 2 of the columns. - Split the remaining column into top/bottom. - Reload kwin. - There is only one tile remaining. The issue was that the second tile was created as a sibling of the originally split tile (i.e. 2 tiles both with the root tile as parent), but the root tile's layout wasn't changed. So it remained horizontal and as a result it was saved incorrectly to JSON (2 horizontal tiles with width = 1, instead of 2 vertical tiles with height = 0.5). When the layout was loaded from the JSON, the second tile was dropped, because it didn't fit. Related: bug 514355 M +27 -0 autotests/integration/tiles_test.cpp M +1 -0 src/tiles/customtile.cpp https://invent.kde.org/plasma/kwin/-/commit/9de61e188c6b583386a3734b7f51d3658b9fbf1c 2519677 6 vlad.zahorodnii 2026-06-01 08:33:47 +0000 Git commit 04e43bd9afbb75985c3e0b9617243d9070f84d30 by Vlad Zahorodnii. Committed on 01/06/2026 at 08:15. Pushed by vladz into branch 'Plasma/6.7'. tiles: fix incorrect split of single tile The bug could be reproduced like this: - Load the 3 column custom tiling layout. - Delete 2 of the columns. - Split the remaining column into top/bottom. - Reload kwin. - There is only one tile remaining. The issue was that the second tile was created as a sibling of the originally split tile (i.e. 2 tiles both with the root tile as parent), but the root tile's layout wasn't changed. So it remained horizontal and as a result it was saved incorrectly to JSON (2 horizontal tiles with width = 1, instead of 2 vertical tiles with height = 0.5). When the layout was loaded from the JSON, the second tile was dropped, because it didn't fit. Related: bug 514355 (cherry picked from commit 9de61e188c6b583386a3734b7f51d3658b9fbf1c) Co-authored-by: Hynek Schlindenbuch <schlindenbuch.h@seznam.cz> M +27 -0 autotests/integration/tiles_test.cpp M +1 -0 src/tiles/customtile.cpp https://invent.kde.org/plasma/kwin/-/commit/04e43bd9afbb75985c3e0b9617243d9070f84d30 2519876 7 schlindenbuch.h 2026-06-01 20:32:10 +0000 Git commit 59dfbab76378b2b6c4df39c75ce0b75d9b1d26de by Hynek Schlindenbuch. Committed on 01/06/2026 at 18:02. Pushed by vladz into branch 'Plasma/6.6'. tiles: fix incorrect split of single tile The bug could be reproduced like this: - Load the 3 column custom tiling layout. - Delete 2 of the columns. - Split the remaining column into top/bottom. - Reload kwin. - There is only one tile remaining. The issue was that the second tile was created as a sibling of the originally split tile (i.e. 2 tiles both with the root tile as parent), but the root tile's layout wasn't changed. So it remained horizontal and as a result it was saved incorrectly to JSON (2 horizontal tiles with width = 1, instead of 2 vertical tiles with height = 0.5). When the layout was loaded from the JSON, the second tile was dropped, because it didn't fit. Related: bug 514355 M +27 -0 autotests/integration/tiles_test.cpp M +1 -0 src/tiles/customtile.cpp https://invent.kde.org/plasma/kwin/-/commit/59dfbab76378b2b6c4df39c75ce0b75d9b1d26de