RSRP-288189: Unable to extract method for for loop

Consider the following code snippet:

var a = GetA();
var b = GetA();
var c = GetA();
for (int i = 0; i < 20 && c != 1 && b != 2 && a != 3; i++)
{
   // Do something
   a = GetA();
   b = GetA();
   c = GetA();
}

Select the snippet "c != 1 && b != 2 && a != 3" and try to extract a method. Notice that its not currently possible. I would expect it to be possible. Not sure whether this is a bug (aka it suppose to work) or a feature (it was never intended to work).