diff --git a/core/java/android/app/ActivityManager.java b/core/java/android/app/ActivityManager.java
index 681ed5b..8637dde 100644
--- a/core/java/android/app/ActivityManager.java
+++ b/core/java/android/app/ActivityManager.java
@@ -1237,6 +1237,18 @@
     public static final int RECENT_IGNORE_HOME_STACK_TASKS = 0x0008;
 
     /**
+     * Ignores all tasks that are on the docked stack.
+     * @hide
+     */
+    public static final int RECENT_INGORE_DOCKED_STACK_TASKS = 0x0010;
+
+    /**
+     * Ignores all tasks that are on the pinned stack.
+     * @hide
+     */
+    public static final int RECENT_INGORE_PINNED_STACK_TASKS = 0x0020;
+
+    /**
      * <p></p>Return a list of the tasks that the user has recently launched, with
      * the most recent being first and older ones after in order.
      *
diff --git a/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java b/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java
index 6a9268a8..35e53f6 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/misc/SystemServicesProxy.java
@@ -194,6 +194,8 @@
         int numTasksToQuery = Math.max(minNumTasksToQuery, numLatestTasks);
         List<ActivityManager.RecentTaskInfo> tasks = mAm.getRecentTasksForUser(numTasksToQuery,
                 ActivityManager.RECENT_IGNORE_HOME_STACK_TASKS |
+                ActivityManager.RECENT_INGORE_DOCKED_STACK_TASKS |
+                ActivityManager.RECENT_INGORE_PINNED_STACK_TASKS |
                 ActivityManager.RECENT_IGNORE_UNAVAILABLE |
                 ActivityManager.RECENT_INCLUDE_PROFILES |
                 ActivityManager.RECENT_WITH_EXCLUDED, userId);
diff --git a/packages/SystemUI/src/com/android/systemui/recents/model/TaskStack.java b/packages/SystemUI/src/com/android/systemui/recents/model/TaskStack.java
index d06012e..6f003ab 100644
--- a/packages/SystemUI/src/com/android/systemui/recents/model/TaskStack.java
+++ b/packages/SystemUI/src/com/android/systemui/recents/model/TaskStack.java
@@ -352,28 +352,28 @@
             @Override
             public boolean acceptTask(SparseArray<Task> taskIdMap, Task t, int index) {
                 if (t.isAffiliatedTask()) {
-                    // If this task is affiliated with another parent in the stack, then the historical state of this
-                    // task depends on the state of the parent task
+                    // If this task is affiliated with another parent in the stack, then the
+                    // historical state of this task depends on the state of the parent task
                     Task parentTask = taskIdMap.get(t.affiliationTaskId);
                     if (parentTask != null) {
                         t = parentTask;
                     }
                 }
-                return !t.isHistorical && !SystemServicesProxy.isDockedStack(t.key.stackId);
+                return !t.isHistorical;
             }
         });
         mHistoryTaskList.setFilter(new TaskFilter() {
             @Override
             public boolean acceptTask(SparseArray<Task> taskIdMap, Task t, int index) {
                 if (t.isAffiliatedTask()) {
-                    // If this task is affiliated with another parent in the stack, then the historical state of this
-                    // task depends on the state of the parent task
+                    // If this task is affiliated with another parent in the stack, then the
+                    // historical state of this task depends on the state of the parent task
                     Task parentTask = taskIdMap.get(t.affiliationTaskId);
                     if (parentTask != null) {
                         t = parentTask;
                     }
                 }
-                return t.isHistorical && !SystemServicesProxy.isDockedStack(t.key.stackId);
+                return t.isHistorical;
             }
         });
     }
diff --git a/services/core/java/com/android/server/am/ActivityManagerService.java b/services/core/java/com/android/server/am/ActivityManagerService.java
index 1d555c6..e1c8256 100644
--- a/services/core/java/com/android/server/am/ActivityManagerService.java
+++ b/services/core/java/com/android/server/am/ActivityManagerService.java
@@ -8768,6 +8768,20 @@
                             continue;
                         }
                     }
+                    if ((flags & ActivityManager.RECENT_INGORE_DOCKED_STACK_TASKS) != 0) {
+                        if (tr.stack != null && tr.stack.isDockedStack()) {
+                            if (DEBUG_RECENTS) Slog.d(TAG_RECENTS,
+                                    "Skipping, docked stack task: " + tr);
+                            continue;
+                        }
+                    }
+                    if ((flags & ActivityManager.RECENT_INGORE_PINNED_STACK_TASKS) != 0) {
+                        if (tr.stack != null && tr.stack.isPinnedStack()) {
+                            if (DEBUG_RECENTS) Slog.d(TAG_RECENTS,
+                                    "Skipping, pinned stack task: " + tr);
+                            continue;
+                        }
+                    }
                     if (tr.autoRemoveRecents && tr.getTopActivity() == null) {
                         // Don't include auto remove tasks that are finished or finishing.
                         if (DEBUG_RECENTS) Slog.d(TAG_RECENTS,
diff --git a/services/core/java/com/android/server/am/ActivityStack.java b/services/core/java/com/android/server/am/ActivityStack.java
index 59acccd..582a1fe 100644
--- a/services/core/java/com/android/server/am/ActivityStack.java
+++ b/services/core/java/com/android/server/am/ActivityStack.java
@@ -520,6 +520,14 @@
         return mStackId == HOME_STACK_ID;
     }
 
+    final boolean isDockedStack() {
+        return mStackId == DOCKED_STACK_ID;
+    }
+
+    final boolean isPinnedStack() {
+        return mStackId == PINNED_STACK_ID;
+    }
+
     final boolean isOnHomeDisplay() {
         return isAttached() &&
                 mActivityContainer.mActivityDisplay.mDisplayId == Display.DEFAULT_DISPLAY;