Binding: short syntax broken with ComponentBehavior: Bound

pragma ComponentBehavior: Bound

import QtQuick

Window {
  id: root

  width: 640
  height: 480
  visible: true
  title: qsTr("Hello World")

  property int foo

  Text {
    text: `Foo: ${root.foo}`
  }

  Repeater {
    model: 1

    delegate: Item {
      id: delegate

      // Error: QML Binding: Unknown name "root.foo". The binding is ignored.
      Binding {
        root.foo: 42
      }

      // Works
      // Binding {
      //   target: root
      //   property: "foo"
      //   value: 42
      // }
    }
  }
}