文件上传区域展开bug修复

components/CollapseTransition/CollapseTransition.vue

@@ -8,7 +8,7 @@
 </template>
 
 <script setup>
-import { ref, watch, nextTick } from 'vue';
+import { ref, watch, nextTick, getCurrentInstance } from 'vue';
 
 const props = defineProps({
     show: Boolean,
@@ -26,11 +26,18 @@ const wrapStyle = ref({
 });
 
 const contentRef = ref(null);
+const instance = getCurrentInstance();
 
 // 获取高度（兼容 H5 + 小程序）
 function getContentHeight() {
     return new Promise((resolve) => {
-        const query = uni.createSelectorQuery().in(this ? this : undefined);
+        let query;
+        // #ifdef MP-WEIXIN
+        query = uni.createSelectorQuery().in(instance);
+        // #endif
+        // #ifndef MP-WEIXIN
+        query = uni.createSelectorQuery();
+        // #endif
         query
             .select('.content-inner')
             .boundingClientRect((data) => {