Getting warning when using useRef hook with React.StrictMode (findDOMNode)

I get an error when using useRef() on a jsx element that toggles a drop down menu made with Material-UI.

where I seem to get the error:

  const anchorRef = useRef()
..................................

        <Typography
        ref={anchorRef}
        className={classes.link}
        onClick={handleDropDown}
        >
          My Account
        </Typography>
        <Menu
        anchorEl={anchorRef.current}
        keepMounted
        open={droppedDown}
        onClose={handleDropDown}
        >

I get this warning:

Warning: findDOMNode is deprecated in StrictMode. findDOMNode was passed an instance of 
Transition which is inside StrictMode. Instead, add a ref directly to the element you want to
 reference. Learn more about using refs safely here:

Is this normal? When I follow the link next to the error I seem to have done everything correctly (https://reactjs.org/link/strict-mode-find-node)

Thank you for reading all this code and for answering