- Support prefix and suffix. [#4226](https://github.com/ant-design/ant-design/issues/4226) [@ystarlongzi](https://github.com/ystarlongzi)
- InputGroup support compact display mode. [pull/4309](https://github.com/ant-design/ant-design/pull/4309)
- Spin support delayed display. [#4306](https://github.com/ant-design/ant-design/issues/4306)
- Fix the dislocation problem of Pagination in low resolution. [#4349](https://github.com/ant-design/ant-design/issues/4349)
- Fix wrapping display of Dropdown.Button. [pull/4355](https://github.com/ant-design/ant-design/pull/4355) [@Morhaus](https://github.com/Morhaus)
- Fix wrong background color of Cascader in disabled status. [#4434](https://github.com/ant-design/ant-design/issues/4434)
- Fix MonthPicker[monthCellContentRender] doesn't work, and some documentation errors. [#4394](https://github.com/ant-design/ant-design/issues/4394)
- Fix the extra border of ButtonGroup. [#4382](https://github.com/ant-design/ant-design/pull/4382) [@ystarlongzi](https://github.com/ystarlongzi)
- Fix wrong background color of the Submenu(horizontal mode). [#4414](https://github.com/ant-design/ant-design/issues/4414)
- Fix overlapping graphics with Select/Cascader in Form.Item with hasFeedback. [#4431](https://github.com/ant-design/ant-design/issues/4431) [@JesperWe](https://github.com/JesperWe)
- Reset border-radius of the first row in Table without header. [#4373](https://github.com/ant-design/ant-design/issues/4373)
- Improve the drag performance of Tree. [#4371](https://github.com/ant-design/ant-design/issues/4371)
- Improve official website and documentation, fix some bugs.
- Update rc-form to support nested style of getFieldDecorator[id].