https://bugs.kde.org/show_bug.cgi?id=362860
--- Comment #7 from Martin Gräßlin <mgraess...@kde.org> --- The reason is that we check the titleBar rect: if (orientation == Qt::Vertical && decoration->decoration()->titleBar().contains(localPos.toPoint())) { decoration->client()->performMouseCommand(options->operationTitlebarMouseWheel(delta * -1), event->globalPosF().toPoint()); } The top most pixel is not part of the title bar, so the event doesn't get processed. Changing this in Breeze causes other breakage, so that's something to fix in KWin. -- You are receiving this mail because: You are watching all bug changes.