I've prepared a small example attached in case my description is not clear enough.
You have a class using a d-pointer, and the same method name in the class and the private class. When you rename the method from the class, it will also rename all occurence of the private class method call inside the class, but it won't rename the declaration and definition in the private class.

Note that the "follow method" action is working, so it's more or less a check missing somewhere.