diff --git a/packages/react-native/ReactCommon/react/renderer/mounting/ShadowTree.cpp b/packages/react-native/ReactCommon/react/renderer/mounting/ShadowTree.cpp
index 5633a99ad37..bdd301f5c3d 100644
--- a/packages/react-native/ReactCommon/react/renderer/mounting/ShadowTree.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/mounting/ShadowTree.cpp
@@ -347,7 +347,8 @@ CommitStatus ShadowTree::tryCommit(
       getShadowTreeCommitSourceName(commitOptions.source));
 
   auto isReactBranch = ReactNativeFeatureFlags::enableFabricCommitBranching() &&
-      commitOptions.source == CommitSource::React;
+      (commitOptions.source == CommitSource::React ||
+       commitOptions.source == CommitSource::AnimationEndSync);
 
   // Commits on the JS branch are never synchronous.
   react_native_assert(!isReactBranch || !commitOptions.mountSynchronously);
diff --git a/packages/react-native/ReactCommon/react/renderer/mounting/updateMountedFlag.cpp b/packages/react-native/ReactCommon/react/renderer/mounting/updateMountedFlag.cpp
index 5c50b837736..0c4ee4902c6 100644
--- a/packages/react-native/ReactCommon/react/renderer/mounting/updateMountedFlag.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/mounting/updateMountedFlag.cpp
@@ -38,7 +38,8 @@ void updateMountedFlag(
   // Runtime shadow node references are updated during the React revision
   // commits so that JS can access layout data from the merged tree.
   bool shouldUpdateRuntimeReference =
-      (commitSource == ShadowTreeCommitSource::React &&
+      ((commitSource == ShadowTreeCommitSource::React ||
+        commitSource == ShadowTreeCommitSource::AnimationEndSync) &&
        ReactNativeFeatureFlags::updateRuntimeShadowNodeReferencesOnCommit()) ||
       (ReactNativeFeatureFlags::
            updateRuntimeShadowNodeReferencesOnCommitThread() &&