Extract to function is available if a declaration isn't selected and generates invalid code

Use Extract to function on the code below with the selection shown in the screenshot (which excludes part of the variable declaration):

int main()
{
    int i = 0;
    return i;
}

Bug: It generates invalid code int return NewFunction(i);. Ideally, it would show the "Expand selection" command, or otherwise don't show the Extract to function code action (and show an error explanation if it's invoked by the keyboard). It also repros with VS.