When migrating to MkDocs/Docoff based docs (https://github.com/react-ui-org/react-ui/pull/440) an issue with the prop `preventScrollUnderneath` in the `Modal` component appeared. It seems that the default scroll prevention does not work with the MkDocs platform: 1. Scrolling is possible when `preventScrollUnderneath="default"` 2. In Chrome (FF is OK) there is extra padding in the top right corner when `Modal` is open: 