[REG 5.3 -> 5.4]: Animations and timers run too fast

import QtQuick 2.0

Item {
    id: root

    Timer {
        running: true
        triggeredOnStart: true
        repeat: true
        interval: 1000
        property real lastDate: Date.now();
        onTriggered: {
            const now = Date.now();
            console.log("> " + (now - lastDate))
            lastDate = now;
        }
    }

    Flipable {
        id: flipable
        width: root.width
        height: root.height

        property bool flipped: false
        property bool horizontalFlip: false

        transform: Rotation {
            id: flipRotation
            origin.x: flipable.width/2
            origin.y: flipable.height/2
            axis.x: flipable.horizontalFlip ? 0 : 1
            axis.y: flipable.horizontalFlip ? 1 : 0
            axis.z: 0
            angle: 0
        }

        states: State {
            when: flipable.flipped
            PropertyChanges {
                target: flipRotation
                angle: 180
            }
            AnchorChanges {
                target: flipable
                anchors.horizontalCenter: root.horizontalCenter
                anchors.top: root.top
            }
        }

        transitions: Transition {
            ParallelAnimation {
                AnchorAnimation {
                    duration: animTimer.interval
                }
                NumberAnimation {
                    target: flipRotation
                    property: "angle"
                    duration: animTimer.interval
                }
            }
        }

        front: Rectangle {
            anchors.fill: parent
            color: "yellow"
            Text {
                anchors.centerIn: parent
                fontSizeMode: Text.Fit
                font.pointSize: 64
                text: "Front"
            }
        }

        back: Rectangle {
            anchors.fill: parent
            color: "green"
            Text {
                anchors.centerIn: parent
                fontSizeMode: Text.Fit
                font.pointSize: 64
                text: "Back"
            }
        }

        Timer {
            id: animTimer
            running: true
            repeat: true
            interval: 1000
            onTriggered: {
                flipable.flipped = !flipable.flipped;
            }
        }
    }
}