FooterCell doesn't work in DataGrid at all.

Hi. I faced a problem with rendering footerCell . It worked for me in version 3.18.0 but after update it doesn't work in versions 5.16.0  - 5.18.0. 

Also I found out that it doesn't work in any your DataGrid examples if I addngi footerCell functionality.

FooterCell looks like :

footerCell={props => (<td className='k-table-td' colSpan={props.colSpan} style={props.style} role={'gridcell'}>Total: </td>)}

or 

footerCell={() => <td>Total:</td>}

In my solution and in all your examples it crashes DataGrid rendering. 

I attached screenshot from my solution, but the same bihavior if I adding this lines of code in any your example of DataGrid demo site.

Is it bug, or what am I doing wrong?