diff --git a/components/canvas/CanvasChatPanel.tsx b/components/canvas/CanvasChatPanel.tsx
index 2dbae2d2d..6bded23fd 100644
--- a/components/canvas/CanvasChatPanel.tsx
+++ b/components/canvas/CanvasChatPanel.tsx
@@ -376,6 +376,9 @@ const CLAWD_TABLE_MAX_BYTES = 10 * 1024 * 1024;
 const CLAWD_PROCESSING_HINT =
   "已收到，这个任务稍微繁重一些，处理时间可能会长一点，请耐心等候。";
 const CLAWD_SUBMITTED_COMPOSER_RECOVERY_TTL_MS = 30 * 60 * 1000;
+const CLAWD_SUBMITTED_COMPOSER_RESTORE_GUARD_DELAYS_MS = [
+  0, 80, 180, 360, 700, 1200, 2000, 3500, 6000, 10000,
+];
 const CLAWD_SUBMITTED_COMPOSER_STORAGE_KEY =
   "ai-chatbot:clawd-submitted-composer";
 const CLAWD_SIMPLE_PROMPT_PATTERNS = [
@@ -2467,28 +2470,79 @@ export function CanvasChatPanel({
     isClawdSubmissionForCurrentComposer,
   ]);
 
+  const scheduleClearRestoredClawdComposerText = useCallback(() => {
+    if (typeof window === "undefined") return;
+    CLAWD_SUBMITTED_COMPOSER_RESTORE_GUARD_DELAYS_MS.forEach((delay) => {
+      window.setTimeout(clearRestoredClawdComposerText, delay);
+    });
+  }, [clearRestoredClawdComposerText]);
+
   useEffect(() => {
     if (typeof window === "undefined") return;
 
-    const clearAfterRestore = () => {
-      [0, 120, 500, 1500].forEach((delay) => {
-        window.setTimeout(clearRestoredClawdComposerText, delay);
-      });
-    };
     const handleVisibilityChange = () => {
       if (document.visibilityState === "visible") {
-        clearAfterRestore();
+        scheduleClearRestoredClawdComposerText();
       }
     };
 
     document.addEventListener("visibilitychange", handleVisibilityChange);
-    window.addEventListener("focus", clearAfterRestore);
-    window.addEventListener("pageshow", clearAfterRestore);
+    window.addEventListener("focus", scheduleClearRestoredClawdComposerText);
+    window.addEventListener("pageshow", scheduleClearRestoredClawdComposerText);
 
     return () => {
       document.removeEventListener("visibilitychange", handleVisibilityChange);
-      window.removeEventListener("focus", clearAfterRestore);
-      window.removeEventListener("pageshow", clearAfterRestore);
+      window.removeEventListener("focus", scheduleClearRestoredClawdComposerText);
+      window.removeEventListener("pageshow", scheduleClearRestoredClawdComposerText);
+    };
+  }, [scheduleClearRestoredClawdComposerText]);
+
+  useEffect(() => {
+    if (typeof window === "undefined" || typeof MutationObserver === "undefined") {
+      return;
+    }
+
+    let observedEditor: HTMLDivElement | null = null;
+    let observer: MutationObserver | null = null;
+    let scheduled = false;
+    let scheduledTimer: number | null = null;
+
+    const scheduleMutationCheck = () => {
+      if (scheduled) return;
+      scheduled = true;
+      scheduledTimer = window.setTimeout(() => {
+        scheduled = false;
+        scheduledTimer = null;
+        clearRestoredClawdComposerText();
+      }, 0);
+    };
+
+    const observeCurrentEditor = () => {
+      const editableDiv = textareaRef.current as HTMLDivElement | null;
+      if (editableDiv === observedEditor) return;
+
+      observer?.disconnect();
+      observer = null;
+      observedEditor = editableDiv;
+
+      if (!editableDiv) return;
+      observer = new MutationObserver(scheduleMutationCheck);
+      observer.observe(editableDiv, {
+        childList: true,
+        characterData: true,
+        subtree: true,
+      });
+    };
+
+    observeCurrentEditor();
+    const observerRefreshTimer = window.setInterval(observeCurrentEditor, 1000);
+
+    return () => {
+      observer?.disconnect();
+      window.clearInterval(observerRefreshTimer);
+      if (scheduledTimer !== null) {
+        window.clearTimeout(scheduledTimer);
+      }
     };
   }, [clearRestoredClawdComposerText]);
 
@@ -10050,9 +10104,7 @@ export function CanvasChatPanel({
         ])
       );
       clearComposerEditor();
-      [0, 120, 500, 1500].forEach((delay) => {
-        window.setTimeout(clearRestoredClawdComposerText, delay);
-      });
+      scheduleClearRestoredClawdComposerText();
       setAttachments([]);
       setClawdTableFiles([]);
       setSelectedSkillTagId(null);
@@ -10513,7 +10565,7 @@ export function CanvasChatPanel({
     setSendGuard,
     setMessages,
     clearComposerEditor,
-    clearRestoredClawdComposerText,
+    scheduleClearRestoredClawdComposerText,
     shouldBlockDuplicateSend,
     status,
 	    mutate,
@@ -14232,6 +14284,9 @@ export function CanvasChatPanel({
                       activeClawdSubmission,
                       textContent
                     );
+                  if (isRestoredSubmittedClawdText) {
+                    scheduleClearRestoredClawdComposerText();
+                  }
                   if (!isRestoredSubmittedClawdText) {
                     composerUserEditedAtRef.current = Date.now();
                   }