diff --git a/core/java/android/content/res/Configuration.java b/core/java/android/content/res/Configuration.java
index 885f4c5..982224b 100644
--- a/core/java/android/content/res/Configuration.java
+++ b/core/java/android/content/res/Configuration.java
@@ -806,7 +806,7 @@
      *
      * <aside class="note"><b>Note:</b> If the app targets
      * {@link android.os.Build.VERSION_CODES#VANILLA_ICE_CREAM}
-     * or after, The width measurement reflects the window size without excluding insets.
+     * or after, the width measurement reflects the window size without excluding insets.
      * Otherwise, the measurement excludes window insets even when the app is displayed edge to edge
      * using {@link android.view.Window#setDecorFitsSystemWindows(boolean)
      * Window#setDecorFitsSystemWindows(boolean)}.</aside>
diff --git a/core/java/android/view/Display.java b/core/java/android/view/Display.java
index 4475418..6464239 100644
--- a/core/java/android/view/Display.java
+++ b/core/java/android/view/Display.java
@@ -916,6 +916,12 @@
      *         {@code getWindowManager()} or {@code getSystemService(Context.WINDOW_SERVICE)}), the
      *         size of the current app window is returned. As a result, in multi-window mode, the
      *         returned size can be smaller than the size of the device screen.
+     *         The returned window size can vary depending on API level:
+     *         <ul>
+     *             <li>API level 35 and above, the window size will be returned.
+     *             <li>API level 34 and below, the window size minus system decoration areas and
+     *             display cutout is returned.
+     *         </ul>
      *     <li>If size is requested from a non-activity context (for example, the application
      *         context, where the WindowManager is accessed by
      *         {@code getApplicationContext().getSystemService(Context.WINDOW_SERVICE)}), the
@@ -924,9 +930,10 @@
      *             <li>API level 29 and below &mdash; The size of the entire display (based on
      *                 current rotation) minus system decoration areas is returned.
      *             <li>API level 30 and above &mdash; The size of the top running activity in the
-     *                 current process is returned. If the current process has no running
-     *                 activities, the size of the device default display, including system
-     *                 decoration areas, is returned.
+     *                 current process is returned, system decoration areas exclusion follows the
+     *                 behavior defined above, based on the caller's API level. If the current
+     *                 process has no running activities, the size of the device default display,
+     *                 including system decoration areas, is returned.
      *         </ul>
      * </ul>
      *
diff --git a/core/java/android/view/WindowManager.java b/core/java/android/view/WindowManager.java
index f22e8f5..0f54940b 100644
--- a/core/java/android/view/WindowManager.java
+++ b/core/java/android/view/WindowManager.java
@@ -781,7 +781,7 @@
      * <p>
      * The metrics describe the size of the area the window would occupy with
      * {@link LayoutParams#MATCH_PARENT MATCH_PARENT} width and height, and the {@link WindowInsets}
-     * such a window would have.
+     * such a window would have. The {@link WindowInsets} are not deducted from the bounds.
      * <p>
      * The value of this is based on the <b>current</b> windowing state of the system.
      *
@@ -811,7 +811,7 @@
      * <p>
      * The metrics describe the size of the largest potential area the window might occupy with
      * {@link LayoutParams#MATCH_PARENT MATCH_PARENT} width and height, and the {@link WindowInsets}
-     * such a window would have.
+     * such a window would have. The {@link WindowInsets} are not deducted from the bounds.
      * <p>
      * Note that this might still be smaller than the size of the physical display if certain areas
      * of the display are not available to windows created in this {@link Context}.
@@ -4264,11 +4264,9 @@
          *         no letterbox is applied."/>
          *
          * <p>
-         * A cutout in the corner is considered to be on the short edge: <br/>
-         * <img src="{@docRoot}reference/android/images/display_cutout/short_edge/fullscreen_corner_no_letterbox.png"
-         * height="720"
-         * alt="Screenshot of a fullscreen activity on a display with a cutout in the corner in
-         *         portrait, no letterbox is applied."/>
+         * A cutout in the corner can be considered to be on different edge in different device
+         * rotations. This behavior may vary from device to device. Use this flag is possible to
+         * letterbox your app if the display cutout is at corner.
          *
          * <p>
          * On the other hand, should the cutout be on the long edge of the display, a letterbox will
diff --git a/core/java/android/view/WindowMetrics.java b/core/java/android/view/WindowMetrics.java
index 26298bc..8bcc9de 100644
--- a/core/java/android/view/WindowMetrics.java
+++ b/core/java/android/view/WindowMetrics.java
@@ -101,9 +101,13 @@
      * Returns the bounds of the area associated with this window or {@code UiContext}.
      * <p>
      * <b>Note that the size of the reported bounds can have different size than
-     * {@link Display#getSize(Point)}.</b> This method reports the window size including all system
-     * bar areas, while {@link Display#getSize(Point)} reports the area excluding navigation bars
-     * and display cutout areas. The value reported by {@link Display#getSize(Point)} can be
+     * {@link Display#getSize(Point)} based on your target API level and calling context.</b>
+     * This method reports the window size including all system
+     * bar areas, while {@link Display#getSize(Point)} can report the area excluding navigation bars
+     * and display cutout areas depending on the calling context and target SDK level. Please refer
+     * to {@link Display#getSize(Point)} for details.
+     * <p>
+     * The value reported by {@link Display#getSize(Point)} excluding system decoration areas can be
      * obtained by using:
      * <pre class="prettyprint">
      * final WindowMetrics metrics = windowManager.getCurrentWindowMetrics();
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index 5fa13ba..405324b 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -2589,6 +2589,8 @@
                  <li>The framework will set {@link android.R.attr#statusBarColor},
                  {@link android.R.attr#navigationBarColor}, and
                  {@link android.R.attr#navigationBarDividerColor} to transparent.
+                 <li>The frameworks will send Configuration no longer considering system insets.
+                 The Configuration will be stable regardless of the system insets change.
              </ul>
 
              <p>If this is true, the edge-to-edge enforcement won't be applied. However, this
diff --git a/services/core/java/com/android/server/wm/ActivityRecord.java b/services/core/java/com/android/server/wm/ActivityRecord.java
index 0066269..655a6c2 100644
--- a/services/core/java/com/android/server/wm/ActivityRecord.java
+++ b/services/core/java/com/android/server/wm/ActivityRecord.java
@@ -660,6 +660,8 @@
 
     private final TaskFragment.ConfigOverrideHint mResolveConfigHint;
 
+    private final boolean mOptOutEdgeToEdge;
+
     private static ConstrainDisplayApisConfig sConstrainDisplayApisConfig;
 
     boolean pendingVoiceInteractionStart;   // Waiting for activity-invoked voice session
@@ -2163,9 +2165,12 @@
                     || ent.array.getBoolean(R.styleable.Window_windowShowWallpaper, false);
             mStyleFillsParent = mOccludesParent;
             noDisplay = ent.array.getBoolean(R.styleable.Window_windowNoDisplay, false);
+            mOptOutEdgeToEdge = ent.array.getBoolean(
+                    R.styleable.Window_windowOptOutEdgeToEdgeEnforcement, false);
         } else {
             mStyleFillsParent = mOccludesParent = true;
             noDisplay = false;
+            mOptOutEdgeToEdge = false;
         }
 
         if (options != null) {
@@ -8694,9 +8699,9 @@
         if (rotation == ROTATION_UNDEFINED && !isFixedRotationTransforming()) {
             rotation = mDisplayContent.getRotation();
         }
-        if (!mResolveConfigHint.mUseOverrideInsetsForConfig
-                || getCompatDisplayInsets() != null || shouldCreateCompatDisplayInsets()
-                || isFloating(parentWindowingMode) || rotation == ROTATION_UNDEFINED) {
+        if (!mOptOutEdgeToEdge && (!mResolveConfigHint.mUseOverrideInsetsForConfig
+                || getCompatDisplayInsets() != null || isFloating(parentWindowingMode)
+                || rotation == ROTATION_UNDEFINED)) {
             // If the insets configuration decoupled logic is not enabled for the app, or the app
             // already has a compat override, or the context doesn't contain enough info to
             // calculate the override, skip the override.