qmllint --compiler reporting spurious errors on grouped properties

            State {
                 name: "leftState"
                AnchorChanges {
                    target: mover
                    anchors.left: main.left
                    anchors.right: undefined
                    anchors.horizontalCenter: undefined
                }
            },
            State {
                name: "middleState"
                AnchorChanges {
                    target: mover
                    anchors {            // <- Line 67
                        left: undefined
                        right: undefined
                        horizontalCenter: main.horizontalCenter
                    }
                }
            },