diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/protolog/ShellProtoLogGroup.java b/libs/WindowManager/Shell/src/com/android/wm/shell/protolog/ShellProtoLogGroup.java
index 20c4e21a811d6..1ddc0e7abeafc 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/protolog/ShellProtoLogGroup.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/protolog/ShellProtoLogGroup.java
@@ -36,6 +36,8 @@ public enum ShellProtoLogGroup implements IProtoLogGroup {
             Consts.TAG_WM_STARTING_WINDOW),
     WM_SHELL_BACK_PREVIEW(Consts.ENABLE_DEBUG, Consts.ENABLE_LOG_TO_PROTO_DEBUG, true,
             "ShellBackPreview"),
+    WM_SHELL_RECENT_TASKS(Consts.ENABLE_DEBUG, Consts.ENABLE_LOG_TO_PROTO_DEBUG, false,
+            Consts.TAG_WM_SHELL),
     TEST_GROUP(true, true, false, "WindowManagerShellProtoLogTest");
 
     private final boolean mEnabled;
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/recents/RecentTasksController.java b/libs/WindowManager/Shell/src/com/android/wm/shell/recents/RecentTasksController.java
index 338c944f7eec8..c166178e9bbd6 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/recents/RecentTasksController.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/recents/RecentTasksController.java
@@ -34,6 +34,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
+import com.android.internal.protolog.common.ProtoLog;
 import com.android.wm.shell.common.RemoteCallable;
 import com.android.wm.shell.common.ShellExecutor;
 import com.android.wm.shell.common.SingleInstanceRemoteListener;
@@ -41,6 +42,7 @@ import com.android.wm.shell.common.TaskStackListenerCallback;
 import com.android.wm.shell.common.TaskStackListenerImpl;
 import com.android.wm.shell.common.annotations.ExternalThread;
 import com.android.wm.shell.common.annotations.ShellMainThread;
+import com.android.wm.shell.protolog.ShellProtoLogGroup;
 import com.android.wm.shell.util.GroupedRecentTaskInfo;
 import com.android.wm.shell.util.StagedSplitBounds;
 
@@ -128,6 +130,8 @@ public class RecentTasksController implements TaskStackListenerCallback,
         mTaskSplitBoundsMap.put(taskId1, splitBounds);
         mTaskSplitBoundsMap.put(taskId2, splitBounds);
         notifyRecentTasksChanged();
+        ProtoLog.v(ShellProtoLogGroup.WM_SHELL_RECENT_TASKS, "Add split pair: %d, %d, %s",
+                taskId1, taskId2, splitBounds);
     }
 
     /**
@@ -141,6 +145,8 @@ public class RecentTasksController implements TaskStackListenerCallback,
             mTaskSplitBoundsMap.remove(taskId);
             mTaskSplitBoundsMap.remove(pairedTaskId);
             notifyRecentTasksChanged();
+            ProtoLog.v(ShellProtoLogGroup.WM_SHELL_RECENT_TASKS, "Remove split pair: %d, %d",
+                    taskId, pairedTaskId);
         }
     }
 
@@ -182,6 +188,7 @@ public class RecentTasksController implements TaskStackListenerCallback,
 
     @VisibleForTesting
     void notifyRecentTasksChanged() {
+        ProtoLog.v(ShellProtoLogGroup.WM_SHELL_RECENT_TASKS, "Notify recent tasks changed");
         for (int i = 0; i < mCallbacks.size(); i++) {
             mCallbacks.get(i).run();
         }