fix bug

packages/core/src/utils/getMarkAttrs.ts

@@ -12,7 +12,7 @@ export default function getMarkAttrs(state: EditorState, type: MarkType) {
   const mark = marks.find(markItem => markItem.type.name === type.name)
 
   if (mark) {
-    return mark.attrs
+    return { ...mark.attrs }
   }
 
   return {}

packages/core/src/utils/getNodeAttrs.ts

@@ -14,7 +14,7 @@ export default function getNodeAttrs(state: EditorState, type: NodeType) {
     .find(nodeItem => nodeItem.type.name === type.name)
 
   if (node) {
-    return node.attrs
+    return { ...node.attrs }
   }
 
   return {}