Address feedback

Author: trueadm

packages/react-dom/src/events/DOMPluginEventSystem.js

@@ -747,13 +747,15 @@ export function accumulateSinglePhaseListeners(
     // this out by checking if intercept fiber set on the event matches the
     // current instance fiber. In which case, we should clear all existing
     // listeners.
-    if (
-      enableCreateEventHandleAPI &&
-      nativeEvent.type === 'beforeblur' &&
+    if (enableCreateEventHandleAPI && nativeEvent.type === 'beforeblur') {
       // $FlowFixMe: internal field
-      nativeEvent._detachedInterceptFiber === instance
-    ) {
-      listeners = [];
+      const detachedInterceptFiber = nativeEvent._detachedInterceptFiber;
+      if (
+        detachedInterceptFiber === instance ||
+        detachedInterceptFiber === instance.alternate
+      ) {
+        listeners = [];
+      }
     }
     instance = instance.return;
   }

packages/react-dom/src/events/__tests__/DOMPluginEventSystem-test.internal.js

@@ -2425,7 +2425,7 @@ describe('DOMPluginEventSystem', () => {
           });
 
           // @gate experimental
-          it('beforeblur has the correct propagation mechancis after a nested focused element is unmounted', () => {
+          it('beforeblur should skip handlers from a deleted subtree after the focused element is unmounted', () => {
             const onBeforeBlur = jest.fn();
             const innerRef = React.createRef();
             const innerRef2 = React.createRef();
@@ -2565,7 +2565,7 @@ describe('DOMPluginEventSystem', () => {
           });
 
           // @gate experimental
-          it('beforeblur has the correct propagation mechancis after a nested focused element is suspended', () => {
+          it('beforeblur should skip handlers from a deleted subtree after the focused element is suspended', () => {
             const onBeforeBlur = jest.fn();
             const innerRef = React.createRef();
             const innerRef2 = React.createRef();