MUI X: Build complex and data-rich applications using a growing list of advanced React components, like the Data Grid, Date and Time Pickers, Charts, and more!
@alexfauquette Could you double-check if this is still an issue?
The problem with Jalali demo has been fixed with https://github.com/mui/mui-x/pull/8006.
The codesandbox link returns an error in Jalali demonstration