Confirmed. Looks like a bug to me.

>Create a PRG:
>
>

>SET STEP ON
>
>LOCAL sString
>sString = "0"
>
>RETURN
>

>
>Run it in VFP 9. Step over the assignment line and hold the mouse over
>the 'sString' variable.
>
>
>The tooltip that shows is "sString = 0"
>
>Run it in VFP 8 and the The tooltip that shows is " sString = '0' "
>
>Minor difference, but in VFP 8 you get the quotes around the data
>value, whereas in VFP 9 you do not.
>
>So, looking only at the tooltip in VFP 9, how do you know the data
>type of sString?