False positive unused private class with type parameter

[eejbyfeldt]

Compiler version

3.7.2

Minimized code

trait A {
  def get: Any = new A.C {}
}

object A {
  private class C[T]
}

Output

-- [E198] Unused Symbol Warning: unused_class.scala:6:16 -
6 |  private class C[T]
  |                ^
  |                unused private member
1 warning found

Expectation

Compiles without warnings.