diff --git a/client/src/shared/ui/RichTextMessageContent.tsx b/client/src/shared/ui/RichTextMessageContent.tsx
index 0d636d9..34d6ad2 100644
--- a/client/src/shared/ui/RichTextMessageContent.tsx
+++ b/client/src/shared/ui/RichTextMessageContent.tsx
@@ -18,9 +18,14 @@ export function RichTextMessageContent({ value, tone = 'default' }: RichTextMess
   })
 
   useEffect(() => {
-    if (!editor) return
+    if (!editor || editor.isDestroyed) return
     const normalizedValue = value.trim() ? value : '<p></p>'
-    if (editor.getHTML() === normalizedValue) return
+    try {
+      if (editor.getHTML() === normalizedValue) return
+    } catch {
+      // editor schema not ready yet
+      return
+    }
     editor.commands.setContent(normalizedValue, { emitUpdate: false })
   }, [editor, value])