Regression starting with 0.21.0-insiders.

Repro is a modification to the bug #2907 . I believe it should start reproing in VS 2019 Preview 2, so I'll file a bug with that after it ships unless they fix it beforehand.

template<typename T>
struct B {
    B(T p2) {  }
};

int main()
{
    B<int>* test1 = new B{ 5 }; // < Error
}

Gives error: "no instance of constructor “B” matches the argument list – argument types are: ({…})”.