[kwin] Fix maximized gap screw-up

kde-plasma/kwin/0021-Fix-erratic-margin-behavior-on-maximize.patch

@@ -0,0 +1,49 @@
+From 4262f23654f5b130e361827a01167acb7283930c Mon Sep 17 00:00:00 2001
+From: Jacopo De Simoi <wilderjds@protonmail.com>
+Date: Wed, 12 Nov 2025 15:05:32 -0500
+Subject: [PATCH 21/21] Fix erratic margin behavior on maximize
+
+Possibly this should be squashed back
+---
+ src/tiles/tile.cpp | 7 ++++---
+ src/workspace.cpp  | 1 +
+ 2 files changed, 5 insertions(+), 3 deletions(-)
+
+diff --git a/src/tiles/tile.cpp b/src/tiles/tile.cpp
+index 2a3f22a4b4..b142f222e9 100644
+--- a/src/tiles/tile.cpp
++++ b/src/tiles/tile.cpp
+@@ -187,14 +187,15 @@ QRectF Tile::windowGeometry() const
+     } else if (quickTileMode() & QuickTileFlag::Bottom) {
+         margins += QMarginsF(0,m_padding,0,0);
+     }
+-    return geom.intersected(workspace()->clientArea(MaximizeArea, m_tiling->output(), m_desktop)) - margins;
+-
++    return geom.intersected(workspace()->clientArea(PlacementArea, m_tiling->output(), m_desktop)) - margins;
+ }
+ 
+ QRectF Tile::maximizedWindowGeometry() const
+ {
+     const auto geom = absoluteGeometry();
+-    return geom.intersected(workspace()->clientArea(MaximizeArea, m_tiling->output(), m_desktop));
++    auto margins = QMarginsF(m_padding, m_padding, m_padding, m_padding);
++    qDebug() << geom << margins << clientArea(MaximizeArea, m_tiling->output(), m_desktop);
++    return geom.intersected(workspace()->clientArea(MaximizeArea, m_tiling->output(), m_desktop)) - margins;
+ }
+ 
+ Qt::Edges Tile::anchors() const
+diff --git a/src/workspace.cpp b/src/workspace.cpp
+index e531a74585..a96a941614 100644
+--- a/src/workspace.cpp
++++ b/src/workspace.cpp
+@@ -2282,6 +2282,7 @@ QRectF Workspace::clientArea(clientAreaOption opt, const Output *output, const V
+ 
+     switch (opt) {
+     case MaximizeArea:
++        border = border + output->defaultPadding();
+     case PlacementArea: {
+         if (auto desktopIt = m_screenAreas.constFind(desktop); desktopIt != m_screenAreas.constEnd()) {
+             if (auto outputIt = desktopIt->constFind(output); outputIt != desktopIt->constEnd()) {
+-- 
+2.51.0
+