diff --git a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
deleted file mode 100644
index 0e12e30..0000000
--- a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginInitializerImpl.java
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
- * except in compliance with the License. You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software distributed under the
- * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the specific language governing
- * permissions and limitations under the License.
- */
-
-package com.android.launcher3.uioverrides.plugins;
-
-import android.content.Context;
-
-import com.android.launcher3.Utilities;
-import com.android.systemui.shared.plugins.PluginInitializer;
-
-public class PluginInitializerImpl implements PluginInitializer {
-    @Override
-    public String[] getPrivilegedPlugins(Context context) {
-        return new String[0];
-    }
-
-    @Override
-    public void handleWtfs() {
-    }
-
-    public boolean isDebuggable() {
-        return Utilities.IS_DEBUG_DEVICE;
-    }
-}
diff --git a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java
index e12f42e..df0ac7c 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/plugins/PluginManagerWrapper.java
@@ -24,17 +24,19 @@
 import android.content.Intent;
 import android.content.pm.ResolveInfo;
 
+import com.android.launcher3.Utilities;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.systemui.plugins.Plugin;
 import com.android.systemui.plugins.PluginListener;
-import com.android.systemui.shared.plugins.PluginInstanceManager;
+import com.android.systemui.shared.plugins.PluginActionManager;
+import com.android.systemui.shared.plugins.PluginInstance;
 import com.android.systemui.shared.plugins.PluginManager;
 import com.android.systemui.shared.plugins.PluginManagerImpl;
 import com.android.systemui.shared.plugins.PluginPrefs;
 
 import java.io.PrintWriter;
 import java.util.ArrayList;
-import java.util.Arrays;
+import java.util.Collections;
 import java.util.List;
 import java.util.Optional;
 import java.util.Set;
@@ -52,29 +54,36 @@
 
     private PluginManagerWrapper(Context c) {
         mContext = c;
-        PluginInitializerImpl pluginInitializer  = new PluginInitializerImpl();
         mPluginEnabler = new PluginEnablerImpl(c);
-        PluginInstanceManager.Factory instanceManagerFactory = new PluginInstanceManager.Factory(
-                c, c.getPackageManager(), c.getMainExecutor(), MODEL_EXECUTOR, pluginInitializer,
+        List<String> privilegedPlugins = Collections.emptyList();
+        PluginInstance.Factory instanceFactory = new PluginInstance.Factory(
+                getClass().getClassLoader(), new PluginInstance.InstanceFactory<>(),
+                new PluginInstance.VersionChecker(), privilegedPlugins,
+                Utilities.IS_DEBUG_DEVICE);
+        PluginActionManager.Factory instanceManagerFactory = new PluginActionManager.Factory(
+                c, c.getPackageManager(), c.getMainExecutor(), MODEL_EXECUTOR,
                 c.getSystemService(NotificationManager.class), mPluginEnabler,
-                Arrays.asList(pluginInitializer.getPrivilegedPlugins(c)));
+                privilegedPlugins, instanceFactory);
 
         mPluginManager = new PluginManagerImpl(c, instanceManagerFactory,
-                pluginInitializer.isDebuggable(),
+                Utilities.IS_DEBUG_DEVICE,
                 Optional.ofNullable(Thread.getDefaultUncaughtExceptionHandler()), mPluginEnabler,
-                new PluginPrefs(c), Arrays.asList(pluginInitializer.getPrivilegedPlugins(c)));
+                new PluginPrefs(c), privilegedPlugins);
     }
 
     public PluginEnablerImpl getPluginEnabler() {
         return mPluginEnabler;
     }
 
-    public void addPluginListener(PluginListener<? extends Plugin> listener, Class<?> pluginClass) {
+    /** */
+    public <T extends Plugin> void addPluginListener(
+            PluginListener<T> listener, Class<T> pluginClass) {
         addPluginListener(listener, pluginClass, false);
     }
 
-    public void addPluginListener(PluginListener<? extends Plugin> listener, Class<?> pluginClass,
-            boolean allowMultiple) {
+    /** */
+    public <T extends Plugin> void addPluginListener(
+            PluginListener<T> listener, Class<T> pluginClass, boolean allowMultiple) {
         mPluginManager.addPluginListener(listener, pluginClass, allowMultiple);
     }
 
diff --git a/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java b/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
index 51a491e..ebe46fe 100644
--- a/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
+++ b/quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java
@@ -89,13 +89,13 @@
                 LauncherSplitScreenListener.INSTANCE.getNoCreate()
                         .getRunningSplitTaskIds().length > 1;
 
-        TaskViewSimulator primaryTVS = new TaskViewSimulator(context,
-                gestureState.getActivityInterface());
-        primaryTVS.getOrientationState().update(
-                mDeviceState.getRotationTouchHelper().getCurrentActiveRotation(),
-                mDeviceState.getRotationTouchHelper().getDisplayRotation());
         mTargetGluer = new RemoteTargetGluer(mContext, mGestureState.getActivityInterface());
         mRemoteTargetHandles = mTargetGluer.getRemoteTargetHandles();
+        runActionOnRemoteHandles(remoteTargetHandle ->
+                remoteTargetHandle.getTaskViewSimulator().getOrientationState().update(
+                        mDeviceState.getRotationTouchHelper().getCurrentActiveRotation(),
+                        mDeviceState.getRotationTouchHelper().getDisplayRotation()
+                ));
     }
 
     protected void initTransitionEndpoints(DeviceProfile dp) {
diff --git a/res/xml/default_workspace_splitdisplay_5x5.xml b/res/xml/default_workspace_splitdisplay_5x5.xml
deleted file mode 100644
index 162367b..0000000
--- a/res/xml/default_workspace_splitdisplay_5x5.xml
+++ /dev/null
@@ -1,107 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2009 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<favorites xmlns:launcher="http://schemas.android.com/apk/res-auto/com.android.launcher3">
-
-    <!-- Hotseat (We use the screen as the position of the item in the hotseat) -->
-    <!-- Dialer, Messaging, [Maps/Music], Browser, Camera -->
-    <resolve
-        launcher:container="-101"
-        launcher:screen="0"
-        launcher:x="0"
-        launcher:y="0" >
-        <favorite launcher:uri="#Intent;action=android.intent.action.DIAL;end" />
-        <favorite launcher:uri="tel:123" />
-        <favorite launcher:uri="#Intent;action=android.intent.action.CALL_BUTTON;end" />
-    </resolve>
-
-    <resolve
-        launcher:container="-101"
-        launcher:screen="1"
-        launcher:x="1"
-        launcher:y="0" >
-        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MESSAGING;end" />
-        <favorite launcher:uri="sms:" />
-        <favorite launcher:uri="smsto:" />
-        <favorite launcher:uri="mms:" />
-        <favorite launcher:uri="mmsto:" />
-    </resolve>
-
-    <resolve
-        launcher:container="-101"
-        launcher:screen="2"
-        launcher:x="2"
-        launcher:y="0" >
-        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MAPS;end" />
-        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MUSIC;end" />
-    </resolve>
-
-    <resolve
-        launcher:container="-101"
-        launcher:screen="3"
-        launcher:x="3"
-        launcher:y="0" >
-        <favorite
-            launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_BROWSER;end" />
-        <favorite launcher:uri="http://www.example.com/" />
-    </resolve>
-
-    <resolve
-        launcher:container="-101"
-        launcher:screen="4"
-        launcher:x="4"
-        launcher:y="0" >
-        <favorite launcher:uri="#Intent;action=android.media.action.STILL_IMAGE_CAMERA;end" />
-        <favorite launcher:uri="#Intent;action=android.intent.action.CAMERA_BUTTON;end" />
-    </resolve>
-
-    <!-- Bottom row -->
-    <resolve
-        launcher:screen="0"
-        launcher:x="0"
-        launcher:y="-1" >
-	    <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_EMAIL;end" />
-	    <favorite launcher:uri="mailto:" />
-
-    </resolve>
-
-    <resolve
-        launcher:screen="0"
-        launcher:x="1"
-        launcher:y="-1" >
-	    <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_GALLERY;end" />
-	    <favorite launcher:uri="#Intent;type=images/*;end" />
-
-    </resolve>
-
-    <resolve
-        launcher:screen="0"
-        launcher:x="4"
-        launcher:y="-1" >
-        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_MARKET;end" />
-        <favorite launcher:uri="market://details?id=com.android.launcher" />
-    </resolve>
-
-    <!-- Placeholder before we add page pairing in b/196376162 -->
-    <resolve
-        launcher:screen="1"
-        launcher:x="0"
-        launcher:y="-4" >
-        <favorite launcher:uri="#Intent;action=android.intent.action.MAIN;category=android.intent.category.APP_GALLERY;end" />
-        <favorite launcher:uri="#Intent;type=images/*;end" />
-    </resolve>
-
-</favorites>
diff --git a/res/xml/device_profiles.xml b/res/xml/device_profiles.xml
index d8ee6f2..256999c 100644
--- a/res/xml/device_profiles.xml
+++ b/res/xml/device_profiles.xml
@@ -105,8 +105,7 @@
         launcher:numFolderColumns="4"
         launcher:numHotseatIcons="5"
         launcher:dbFile="launcher.db"
-        launcher:defaultLayoutId="@xml/default_workspace_5x5"
-        launcher:defaultSplitDisplayLayoutId="@xml/default_workspace_splitdisplay_5x5" >
+        launcher:defaultLayoutId="@xml/default_workspace_5x5" >
 
         <display-option
             launcher:name="Large Phone"
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 9a3da53..54b2c96 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -859,18 +859,13 @@
         mWorkspaceScreens.remove(emptyScreenId);
         mScreenOrder.removeValue(emptyScreenId);
 
-        int newScreenId = LauncherSettings.Settings.call(getContext().getContentResolver(),
-                LauncherSettings.Settings.METHOD_NEW_SCREEN_ID)
-                .getInt(LauncherSettings.Settings.EXTRA_VALUE);
-
-
-        // When two panel home is enabled and the last page (the page on the right) doesn't
-        // have any items, then Launcher database doesn't know about this page because it was added
-        // by Launcher::bindAddScreens but wasn't inserted into the database. LauncherSettings's
-        // generate new screen ID method will return the ID for the left page,
-        // so we need to increment it.
-        if (isTwoPanelEnabled() && emptyScreenId == EXTRA_EMPTY_SCREEN_ID && newScreenId % 2 == 1) {
-            newScreenId++;
+        int newScreenId = -1;
+        // Launcher database isn't aware of empty pages that are already bound, so we need to
+        // skip those IDs manually.
+        while (newScreenId == -1 || mWorkspaceScreens.containsKey(newScreenId)) {
+            newScreenId = LauncherSettings.Settings.call(getContext().getContentResolver(),
+                    LauncherSettings.Settings.METHOD_NEW_SCREEN_ID)
+                    .getInt(LauncherSettings.Settings.EXTRA_VALUE);
         }
 
         mWorkspaceScreens.put(newScreenId, cl);
diff --git a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
index 064d808..f1fd439 100644
--- a/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
+++ b/src/com/android/launcher3/touch/PortraitPagedViewHandler.java
@@ -503,9 +503,11 @@
             if (dp.isLandscape) {
                 splitOffset.x = splitInfo.leftTopBounds.width() +
                         splitInfo.visualDividerBounds.width();
+                splitOffset.y = 0;
             } else {
                 splitOffset.y = splitInfo.leftTopBounds.height() +
                         splitInfo.visualDividerBounds.height();
+                splitOffset.x = 0;
             }
         }
     }