renderCell from Mui DataGrid not rendering conditionally

I have a simple setup for my Mui DataGrid. The issue I have though, is that renderCell isn't rendering my elements conditionally.

It should show per default an EditIcon button (the pencil) and as soon as I click on it, it should call fetchSomething - which it does - and switch to the Mui CircularProgress element by setting isLoading to true but the CircularProgress element is never displayed.

I tested quickly via a useEffect to see if the state changes and it does change from false to true then again to false but the CircularProgress is nowhere to be seen.

Am I having issues with ids? Any way to solve this?

const Component = () => {
    const [isLoading, setIsLoading] = useState(false);

    const fetchSomething = (event) => {

        setIsLoading(true);

        fetch(event.id)
         .then(() => doSmth())
         .catch((error) => console.log(error))
         .finally(() => setIsLoading(false));
    };


    const usersTableColumns = [
            {
                field: 'id',
                headerName: 'ID',
                width: 200,
                flex: 1,
            },
            {
                field: 'username',
                headerName: 'USER NAME',
                width: 170,
                flex: 1,
            },
            {
                field: 'action',
                headerName: 'Edit',
                sortable: false,
                renderCell: (params) => (isLoading ? <CircularProgress size={30} /> : (
                    <EditIcon onClick={fetchSomething} />
                )),
            },
    ];

    return(
        <DataGrid rows={rows} columns={usersTableColumns}/>
    );
}

EDIT According to the logic above all pencils should become spinners as soon as I click on one of them, so I tried adding dynamically the ids to the state and checking for a certain id when displaying CircularProgress but it seems like the state updates just don't show up for renderCell.

For anyone struggling with this the solution is very simple. It took me a bit but I got it.

You need to export the content of renderCell into a new component and import it. You will also have to put the hook into that component. This will create a component for each row so you will not have any issues with ids.

Even then, conditionally rendering the cell would not work anyways.

https://mui.com/x/react-data-grid/column-definition/

const Component = ({
    fetchSmth, params,
}) => {
    const [isLoading, setIsLoading] = useState(false);

    const doSmth= async () => {
        setIsLoading(true);
        await fetchSmth(params.row);
        setIsLoading(false);
    };

    return (
        <Tooltip title='Some title'>
            <IconButton
                variant='contained'
                onClick={(e) => {
                    doSmth(e);
                }}
            >
                {isLoading ? <CircularProgress size={30} /> : <EditIcon />}
            </IconButton>
        </Tooltip>
    );
};

export default Component;

renderCell has just to render this component. You can test this (if your REST call is too fast by throttling your browser in mobile mode.