diff --git a/frontend/src/components/canvas/components/AttrListExtend.vue b/frontend/src/components/canvas/components/AttrListExtend.vue
index 37edce3419..4b0412355f 100644
--- a/frontend/src/components/canvas/components/AttrListExtend.vue
+++ b/frontend/src/components/canvas/components/AttrListExtend.vue
@@ -1,7 +1,7 @@
 <!-- TODO: 这个页面后续将用 JSX 重构 -->
 <template>
   <div class="attr-list">
-    <el-form label-width="80px">
+    <el-form label-width="80px" size="mini">
       <el-form-item v-for="(key, index) in styleKeys.filter(item => item != 'rotate')" :key="index" :label="map[key]+':'">
         <el-color-picker v-if="key == 'borderColor'" v-model="curComponent.style[key]" />
         <el-color-picker v-else-if="key == 'color'" v-model="curComponent.style[key]" />
diff --git a/frontend/src/components/canvas/store/snapshot.js b/frontend/src/components/canvas/store/snapshot.js
index e6eab66061..c2574de9c1 100644
--- a/frontend/src/components/canvas/store/snapshot.js
+++ b/frontend/src/components/canvas/store/snapshot.js
@@ -9,6 +9,7 @@ export default {
   },
   mutations: {
     undo(state) {
+      store.commit('setCurComponent', { component: null, index: null })
       if (state.snapshotIndex > 0) {
         state.snapshotIndex--
         store.commit('setComponentData', deepCopy(state.snapshotData[state.snapshotIndex]))
@@ -17,6 +18,7 @@ export default {
     },
 
     redo(state) {
+      store.commit('setCurComponent', { component: null, index: null })
       if (state.snapshotIndex < state.snapshotData.length - 1) {
         state.snapshotIndex++
         store.commit('setComponentData', deepCopy(state.snapshotData[state.snapshotIndex]))