diff --git a/src/core/Bridge/Suspense.js b/src/core/Bridge/Suspense.js
index 1828fb9..91afeb1 100644
--- a/src/core/Bridge/Suspense.js
+++ b/src/core/Bridge/Suspense.js
@@ -9,10 +9,20 @@ const Lazy = isSupported ? lazy(() => new Promise(() => null)) : () => null
 
 class FallbackListener extends Component {
   componentDidMount() {
-    run(this.props, 'onStart')
+    // Defer onStart to a microtask to break the synchronous render loop
+    // that occurs with React 18's createRoot. Without this, the cycle
+    // componentDidMount → setState → re-render → throw promise → Suspense
+    // fallback → componentDidMount repeats synchronously until React's
+    // max update depth is exceeded.
+    Promise.resolve().then(() => {
+      if (!this._unmounted) {
+        run(this.props, 'onStart')
+      }
+    })
   }
 
   componentWillUnmount() {
+    this._unmounted = true
     run(this.props, 'onEnd')
   }
 
diff --git a/src/core/Keeper.js b/src/core/Keeper.js
index cc7fb6d..fc337cc 100644
--- a/src/core/Keeper.js
+++ b/src/core/Keeper.js
@@ -1,5 +1,6 @@
 import React, { PureComponent, Suspense } from 'react'
-import { flushSync } from 'react-dom'
+// flushSync removed — it forces synchronous rendering inside createRoot,
+// bypassing React 18's automatic batching and causing infinite update loops.
 import { get, run, nextTick, EventBus } from 'szfe-tools'
 
 import ReactFreeze from './Freeze'
@@ -103,10 +104,8 @@ export default class Keeper extends PureComponent {
     // 缓存后，延迟冻结，保证各项后续处理得以进行，如关闭弹窗等
     clearTimeout(this.freezeTimeout)
     this.freezeTimeout = setTimeout(() => {
-      flushSync(() => {
-        this.safeSetState({
-          freeze: true,
-        })
+      this.safeSetState({
+        freeze: true,
       })
     }, 1000)
   }