- AutoComplete supports to listen to search events by `onSearch`. [#5888](https://github.com/ant-design/ant-design/issues/5888)
- Checkbox.Group can support more flexible layout with nested Checkbox. [demo](http://ant.design/components/checkbox-cn/#components-checkbox-demo-layout)
- Notification's inline style and className can be customized now. [#5893](https://github.com/ant-design/ant-design/issues/5893) [@lixiaoyang1992](https://github.com/lixiaoyang1992)
- TimePicker's open status can be controlled by `open` property. [#5913](https://github.com/ant-design/ant-design/pull/5913)
- The returned value of Upload[onRemove] could be a promise to control remove logic asynchronously. [#5973](https://github.com/ant-design/ant-design/issues/5973) [@shlice](https://github.com/shlice)
- Adjust padding of popup of Dropdown. [#5088](https://github.com/ant-design/ant-design/issues/5088)
- AutoComplete
- Fix inconsistent behavior between `dataSource: Object[]` and `dataSource: String[]`. [#5860](https://github.com/ant-design/ant-design/issues/5860)
- Fix broken style of error style in Form. [#5834](https://github.com/ant-design/ant-design/issues/5834) [@kossel](https://github.com/kossel)
- Fix that Button should not insert space in Chinese characters while using Icon. [#5977](https://github.com/ant-design/ant-design/issues/5977)
- Fix broken style while using Cascader in Card[title]. [#5952](https://github.com/ant-design/ant-design/issues/5952)
- Fix broken disabled style of Checkbox Radio. [#5935](https://github.com/ant-design/ant-design/issues/5935)
- Fix broken style of DatePicker with nested TimePicker while using `use12Hours`. [#5959](https://github.com/ant-design/ant-design/issues/5959)
- Fix broken style while using AutoComplete, Cascader, Mention, TimePicker in Input.Group. [#5832](https://github.com/ant-design/ant-design/issues/5832)
- Fix missing TypeScript definition of `inlineIndent` Menu. [#5903](https://github.com/ant-design/ant-design/pull/5903) [@brookshi](https://github.com/brooksh)
- Mention
- Fix missing properties, readOnly and disabled. [#5175](https://github.com/ant-design/ant-design/issues/5175)