Alexandre Fauquette

I do not think it's possible. The fact you can not add a `,` seems to come from the `type="number"` Of course you can remove `type="number"` and add a valueParser,...

Thanks for reporting this bug The problem seems to come from [those lines](https://github.com/mui/mui-x/blob/master/packages/x-date-pickers/src/internals/hooks/usePickerState.ts#L217:L222). Before calling `onChange` a comparison is made between the the new value `params.value` and the committed one...

@LukasTy why not using a quick fix. Id on't think it's problem if developers get a `onChange(null)` when the value is already `null`. I thought about a second type of...

Sounds like an edge case not handles. The Popper `onClose` is in fact `onDismiss` with the idea that when you open the popper, you select a date. But in your...

@cherniavskii I added the proposed fix in the PR such that `Or` has a consistent behavior when adding items and the test related to it

Fixed by #5768

About vitualization: Before/after the first/last rendered column, I loop on other visible as long as they extend the first/last group of a given header row. This allows to render groups...

@gerdadesign About the `font-size` varying depending on the hierarchical level, I'm a bit concerned because for now, we use only one `font-size` which is fixed for all the data grid...

@m4theushw I was looking at the [`aria-rowcount`](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes/aria-rowcount) property, and it seems that every row should be counted. INcluding the column header (and now the rows of the column grouping) I...

@m4theushw About putting columns that do not belong to a group in the grouping model I do not understand what is the usecase. For AG grid, I understand, because grouping...