- [ ] I have searched the [issues](https://github.com/vueComponent/ant-design-vue/issues) of this repository and believe that this is not a duplicate. ### What problem does this feature solve? 完整的bug触发和情况如下: <a-tooltip trigger="hover"> <template #title>{{ t("2dmapv2.CommonUI.layerControls.block") }}</template> <template #default> <div class="sub-button active" @click="handleClick"></div> </template> </a-tooltip> 我使用handleClick来给default插槽内的div的classList动态控制是否包含active类 但是在源码中, 在hover结束后直接将props.class写入到default插槽了 ### What does the proposed API look like? hover开始, hover结束的触发事件中, 应该也使用javascirpt的classList.add来, 而不要将类列表重新赋值 <!-- generated by issue-helper. DO NOT REMOVE -->