SC: ClassCastException for comparison to single-character string literal in closure

class Node {
  String name, text
}
class Root implements Iterable<Node> {
  @Override
  Iterator<Node> iterator() {
    return [
      new Node(name: 'term', text: 'foo'),
      new Node(name: 'dash', text: '-'  ),
      new Node(name: 'term', text: 'bar')
    ].iterator()
  }
}

@groovy.transform.CompileStatic
void test() {
  Root root = new Root()

  root[0].with {
    assert name == 'term'
    assert text == 'foo'
  }
  root[1].with {
    assert name == 'dash'
    assert text == '-' // GroovyCastException: Cannot cast object 'script@b91d8c4' with class 'script' to class 'bugs.Node'
  }
}

test()