diff --git a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
index a5a719cc1..05ce4025e 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/fabric/FabricUIManager.java
@@ -451,7 +451,7 @@ public class FabricUIManager implements UIManager, JSHandler {
     }
 
     int tag = node.getReactTag();
-    if (mRootShadowNodeRegistry.getNode(tag) == null) {
+    if (getRootNode(tag) == null) {
       boolean frameDidChange =
           node.dispatchUpdates(absoluteX, absoluteY, mUIViewOperationQueue, null);
       // Notify JS about layout event if requested
@@ -511,13 +511,16 @@ public class FabricUIManager implements UIManager, JSHandler {
 
   @Override
   @DoNotStrip
-  public void updateRootLayoutSpecs(int rootViewTag, int widthMeasureSpec, int heightMeasureSpec) {
-    ReactShadowNode rootNode = mRootShadowNodeRegistry.getNode(rootViewTag);
+  public synchronized void updateRootLayoutSpecs(int rootViewTag, int widthMeasureSpec, int heightMeasureSpec) {
+    ReactShadowNode rootNode = getRootNode(rootViewTag);
     if (rootNode == null) {
       FLog.w(ReactConstants.TAG, "Tried to update non-existent root tag: " + rootViewTag);
       return;
     }
-    updateRootView(rootNode, widthMeasureSpec, heightMeasureSpec);
+
+    ReactShadowNode newRootNode = rootNode.mutableCopy(rootNode.getInstanceHandle());
+    updateRootView(newRootNode, widthMeasureSpec, heightMeasureSpec);
+    mRootShadowNodeRegistry.replaceNode(newRootNode);
   }
 
   /**
@@ -526,18 +529,20 @@ public class FabricUIManager implements UIManager, JSHandler {
    * //TODO: change synchronization to integrate with new #render loop.
    */
   private synchronized void updateRootSize(int rootTag, int newWidth, int newHeight) {
-    ReactShadowNode rootNode = mRootShadowNodeRegistry.getNode(rootTag);
+    ReactShadowNode rootNode = getRootNode(rootTag);
     if (rootNode == null) {
       FLog.w(
         ReactConstants.TAG,
         "Tried to update size of non-existent tag: " + rootTag);
       return;
     }
+
+    ReactShadowNode newRootNode = rootNode.mutableCopy(rootNode.getInstanceHandle());
     int newWidthSpec = View.MeasureSpec.makeMeasureSpec(newWidth, View.MeasureSpec.EXACTLY);
     int newHeightSpec = View.MeasureSpec.makeMeasureSpec(newHeight, View.MeasureSpec.EXACTLY);
-    updateRootView(rootNode, newWidthSpec, newHeightSpec);
+    updateRootView(newRootNode, newWidthSpec, newHeightSpec);
 
-    completeRoot(rootTag, rootNode.getChildrenList());
+    completeRoot(rootTag, newRootNode.getChildrenList());
   }
 
   public void removeRootView(int rootTag) {
diff --git a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java
index dffd37266..d6075b7db 100644
--- a/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java
+++ b/ReactAndroid/src/main/java/com/facebook/react/uimanager/ReactShadowNodeImpl.java
@@ -299,6 +299,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public final void markUpdateSeen() {
+    assertNotSealed();
     mNodeUpdated = false;
     if (hasNewLayout()) {
       markLayoutSeen();
@@ -324,6 +325,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void dirty() {
+    assertNotSealed();
     if (!isVirtual()) {
       mYogaNode.dirty();
     }
@@ -336,6 +338,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void addChildAt(ReactShadowNodeImpl child, int i) {
+    assertNotSealed();
     if (mChildren == null) {
       mChildren = new ArrayList<>(4);
     }
@@ -367,6 +370,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public ReactShadowNodeImpl removeChildAt(int i) {
+    assertNotSealed();
     if (mChildren == null) {
       throw new ArrayIndexOutOfBoundsException(
         "Index " + i + " out of bounds: node has no children");
@@ -539,6 +543,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setReactTag(int reactTag) {
+    assertNotSealed();
     mReactTag = reactTag;
   }
 
@@ -550,11 +555,13 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public final void setRootTag(int rootTag) {
+    assertNotSealed();
     mRootTag = rootTag;
   }
 
   @Override
   public final void setViewClassName(String viewClassName) {
+    assertNotSealed();
     mViewClassName = viewClassName;
   }
 
@@ -596,6 +603,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public final void markLayoutSeen() {
+    assertNotSealed();
     if (mYogaNode != null) {
       mYogaNode.markLayoutSeen();
     }
@@ -607,6 +615,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
    */
   @Override
   public final void addNativeChildAt(ReactShadowNodeImpl child, int nativeIndex) {
+    assertNotSealed();
     Assertions.assertCondition(!mIsLayoutOnly);
     Assertions.assertCondition(!child.mIsLayoutOnly);
 
@@ -658,6 +667,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
    */
   @Override
   public final void setIsLayoutOnly(boolean isLayoutOnly) {
+    assertNotSealed();
     Assertions.assertCondition(getParent() == null, "Must remove from no opt parent first");
     Assertions.assertCondition(mNativeParent == null, "Must remove from native parent first");
     Assertions.assertCondition(getNativeChildCount() == 0, "Must remove all native children first");
@@ -806,6 +816,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setLayoutDirection(YogaDirection direction) {
+    assertNotSealed();
     mYogaNode.setDirection(direction);
   }
 
@@ -816,36 +827,43 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setStyleWidth(float widthPx) {
+    assertNotSealed();
     mYogaNode.setWidth(widthPx);
   }
 
   @Override
   public void setStyleWidthPercent(float percent) {
+    assertNotSealed();
     mYogaNode.setWidthPercent(percent);
   }
 
   @Override
   public void setStyleWidthAuto() {
+    assertNotSealed();
     mYogaNode.setWidthAuto();
   }
 
   @Override
   public void setStyleMinWidth(float widthPx) {
+    assertNotSealed();
     mYogaNode.setMinWidth(widthPx);
   }
 
   @Override
   public void setStyleMinWidthPercent(float percent) {
+    assertNotSealed();
     mYogaNode.setMinWidthPercent(percent);
   }
 
   @Override
   public void setStyleMaxWidth(float widthPx) {
+    assertNotSealed();
     mYogaNode.setMaxWidth(widthPx);
   }
 
   @Override
   public void setStyleMaxWidthPercent(float percent) {
+    assertNotSealed();
     mYogaNode.setMaxWidthPercent(percent);
   }
 
@@ -856,126 +874,151 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setStyleHeight(float heightPx) {
+    assertNotSealed();
     mYogaNode.setHeight(heightPx);
   }
 
   @Override
   public void setStyleHeightPercent(float percent) {
+    assertNotSealed();
     mYogaNode.setHeightPercent(percent);
   }
 
   @Override
   public void setStyleHeightAuto() {
+    assertNotSealed();
     mYogaNode.setHeightAuto();
   }
 
   @Override
   public void setStyleMinHeight(float widthPx) {
+    assertNotSealed();
     mYogaNode.setMinHeight(widthPx);
   }
 
   @Override
   public void setStyleMinHeightPercent(float percent) {
+    assertNotSealed();
     mYogaNode.setMinHeightPercent(percent);
   }
 
   @Override
   public void setStyleMaxHeight(float widthPx) {
+    assertNotSealed();
     mYogaNode.setMaxHeight(widthPx);
   }
 
   @Override
   public void setStyleMaxHeightPercent(float percent) {
+    assertNotSealed();
     mYogaNode.setMaxHeightPercent(percent);
   }
 
   @Override
   public void setFlex(float flex) {
+    assertNotSealed();
     mYogaNode.setFlex(flex);
   }
 
   @Override
   public void setFlexGrow(float flexGrow) {
+    assertNotSealed();
     mYogaNode.setFlexGrow(flexGrow);
   }
 
   @Override
   public void setFlexShrink(float flexShrink) {
+    assertNotSealed();
     mYogaNode.setFlexShrink(flexShrink);
   }
 
   @Override
   public void setFlexBasis(float flexBasis) {
+    assertNotSealed();
     mYogaNode.setFlexBasis(flexBasis);
   }
 
   @Override
   public void setFlexBasisAuto() {
+    assertNotSealed();
     mYogaNode.setFlexBasisAuto();
   }
 
   @Override
   public void setFlexBasisPercent(float percent) {
+    assertNotSealed();
     mYogaNode.setFlexBasisPercent(percent);
   }
 
   @Override
   public void setStyleAspectRatio(float aspectRatio) {
+    assertNotSealed();
     mYogaNode.setAspectRatio(aspectRatio);
   }
 
   @Override
   public void setFlexDirection(YogaFlexDirection flexDirection) {
+    assertNotSealed();
     mYogaNode.setFlexDirection(flexDirection);
   }
 
   @Override
   public void setFlexWrap(YogaWrap wrap) {
+    assertNotSealed();
     mYogaNode.setWrap(wrap);
   }
 
   @Override
   public void setAlignSelf(YogaAlign alignSelf) {
+    assertNotSealed();
     mYogaNode.setAlignSelf(alignSelf);
   }
 
   @Override
   public void setAlignItems(YogaAlign alignItems) {
+    assertNotSealed();
     mYogaNode.setAlignItems(alignItems);
   }
 
   @Override
   public void setAlignContent(YogaAlign alignContent) {
+    assertNotSealed();
     mYogaNode.setAlignContent(alignContent);
   }
 
   @Override
   public void setJustifyContent(YogaJustify justifyContent) {
+    assertNotSealed();
     mYogaNode.setJustifyContent(justifyContent);
   }
 
   @Override
   public void setOverflow(YogaOverflow overflow) {
+    assertNotSealed();
     mYogaNode.setOverflow(overflow);
   }
 
   @Override
   public void setDisplay(YogaDisplay display) {
+    assertNotSealed();
     mYogaNode.setDisplay(display);
   }
 
   @Override
   public void setMargin(int spacingType, float margin) {
+    assertNotSealed();
     mYogaNode.setMargin(YogaEdge.fromInt(spacingType), margin);
   }
 
   @Override
   public void setMarginPercent(int spacingType, float percent) {
+    assertNotSealed();
     mYogaNode.setMarginPercent(YogaEdge.fromInt(spacingType), percent);
   }
 
   @Override
   public void setMarginAuto(int spacingType) {
+    assertNotSealed();
     mYogaNode.setMarginAuto(YogaEdge.fromInt(spacingType));
   }
 
@@ -991,12 +1034,14 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setDefaultPadding(int spacingType, float padding) {
+    assertNotSealed();
     mDefaultPadding.set(spacingType, padding);
     updatePadding();
   }
 
   @Override
   public void setPadding(int spacingType, float padding) {
+    assertNotSealed();
     mPadding[spacingType] = padding;
     mPaddingIsPercent[spacingType] = false;
     updatePadding();
@@ -1004,12 +1049,14 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setPaddingPercent(int spacingType, float percent) {
+    assertNotSealed();
     mPadding[spacingType] = percent;
     mPaddingIsPercent[spacingType] = !YogaConstants.isUndefined(percent);
     updatePadding();
   }
 
   private void updatePadding() {
+    assertNotSealed();
     for (int spacingType = Spacing.LEFT; spacingType <= Spacing.ALL; spacingType++) {
       if (spacingType == Spacing.LEFT
           || spacingType == Spacing.RIGHT
@@ -1045,36 +1092,43 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setBorder(int spacingType, float borderWidth) {
+    assertNotSealed();
     mYogaNode.setBorder(YogaEdge.fromInt(spacingType), borderWidth);
   }
 
   @Override
   public void setPosition(int spacingType, float position) {
+    assertNotSealed();
     mYogaNode.setPosition(YogaEdge.fromInt(spacingType), position);
   }
 
   @Override
   public void setPositionPercent(int spacingType, float percent) {
+    assertNotSealed();
     mYogaNode.setPositionPercent(YogaEdge.fromInt(spacingType), percent);
   }
 
   @Override
   public void setPositionType(YogaPositionType positionType) {
+    assertNotSealed();
     mYogaNode.setPositionType(positionType);
   }
 
   @Override
   public void setShouldNotifyOnLayout(boolean shouldNotifyOnLayout) {
+    assertNotSealed();
     mShouldNotifyOnLayout = shouldNotifyOnLayout;
   }
 
   @Override
   public void setBaselineFunction(YogaBaselineFunction baselineFunction) {
+    assertNotSealed();
     mYogaNode.setBaselineFunction(baselineFunction);
   }
 
   @Override
   public void setMeasureFunction(YogaMeasureFunction measureFunction) {
+    assertNotSealed();
     mYogaNode.setMeasureFunction(measureFunction);
   }
 
@@ -1147,6 +1201,7 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
 
   @Override
   public void setInstanceHandle(long instanceHandle) {
+    assertNotSealed();
     mInstanceHandle = instanceHandle;
   }
 
@@ -1159,4 +1214,10 @@ public class ReactShadowNodeImpl implements ReactShadowNode<ReactShadowNodeImpl>
   public boolean isSealed() {
     return mIsSealed;
   }
+
+  private void assertNotSealed() {
+    if (mIsSealed) {
+      throw new IllegalStateException("Can not modify sealed node " + toString());
+    }
+  }
 }