SUMMARY I expect that when quick tiling rounded corners should be disabled on the window that is tiling, similar to how tiling works on microsoft windows 11. STEPS TO REPRODUCE 1. tile window in half or corner 2. observe rounded edges are still occuring OBSERVED RESULT rounded corners in the top left/right of all windows EXPECTED RESULT windows do not have rounded corners in the top left/right when tiled SOFTWARE/OS VERSIONS Linux/KDE Plasma: Ubuntu 24.04 Neon with KDE Neon apt repo (available in About System) KDE Plasma Version: 6.1.2 KDE Frameworks Version: 6.3.0 Qt Version: 6.7.0
IIRC the corners used t
...Used to become square, but this broke at some point.
I cannot reproduce the issue with client side decorated apps I can reproduce the issue when a window is decorated. It appears that breeze decoration theme doesn't handle tiled edges.
*** Bug 506175 has been marked as a duplicate of this bug. ***
A possibly relevant merge request was started @ https://invent.kde.org/plasma/breeze/-/merge_requests/640
Git commit 6922a86943cc3662a6cde77ac9c5aa6b238c669a by Nate Graham, on behalf of Ethan Chappel. Committed on 29/09/2026 at 19:57. Pushed by ngraham into branch 'master'. kdecoration: Remove corner radius when tiled Remove corner radius of tiled windows so they fill gaps at the corners of the display and other tiled windows. Also applies when windows are maximized vertically or horizontally with a middle or right click of the maximize button. FIXED-IN: 6.8.0 M +9 -5 kdecoration/breezedecoration.cpp https://invent.kde.org/plasma/breeze/-/commit/6922a86943cc3662a6cde77ac9c5aa6b238c669a
Git commit b26d4eeccf2e2c8972ca353c8b40f81830ef8d68 by Nate Graham. Committed on 29/09/2026 at 20:01. Pushed by ngraham into branch 'Plasma/6.8'. kdecoration: Remove corner radius when tiled Remove corner radius of tiled windows so they fill gaps at the corners of the display and other tiled windows. Also applies when windows are maximized vertically or horizontally with a middle or right click of the maximize button. FIXED-IN: 6.8.0 (cherry picked from commit 6922a86943cc3662a6cde77ac9c5aa6b238c669a) 72b395c5 kdecoration: Remove corner radius when tiled Co-authored-by: Ethan Chappel <ethan.chappel@hotmail.com> M +9 -5 kdecoration/breezedecoration.cpp https://invent.kde.org/plasma/breeze/-/commit/b26d4eeccf2e2c8972ca353c8b40f81830ef8d68