"Extract method" with a generic local function creates invalid code

[Tragetaschen]

Version Used: VS 15.3.5

Steps to Reproduce:

private void test()
{
    void foo<T> (T bar) => Console.WriteLine(bar);
    foo(3);
}

Run "Extract Method" on the entire contents of test

Expected Behavior:

private void test()
{
    NewMethod();
}

private static void NewMethod()
{
    void foo<T>(T bar) => Console.WriteLine(bar);
    foo(3);
}

Actual Behavior:

private void test()
{
    NewMethod<T>();
}

private static void NewMethod<T>()
{
    void foo<T>(T bar) => Console.WriteLine(bar);
    foo(3);
}

NewMethod gets a generic parameter that isn't available at the call site (error) and generates a warning for the T on foo within NewMethod due to having the same name as NewMethod's T.

[jcouv]

FYI @agocke

[CyrusNajmabadi]

We would take a targeted community fix here.