The `expandRow` option does not work with nested `keyField` (e.g. `keyField="some.deep.id.key"`). As I can see it's because of this line: https://github.com/react-bootstrap-table/react-bootstrap-table2/blob/497bf44192a99a0a6612317200aa940d0f1a12ab/packages/react-bootstrap-table2/src/store/expand.js#L28