MouseArea inside of SpinBox contentItem is blocking hovered property

import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Templates 2.15 as T
import QtQuick.Window 2.15

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

    T.SpinBox {
        id: mySpinBox

        hoverEnabled: true
        onHoveredChanged: console.log("SpinBox hovered", mySpinBox.hovered)

        implicitWidth: Math.max(implicitBackgroundWidth + leftInset + rightInset,
                                contentItem.implicitWidth + 2 * padding +
                                up.implicitIndicatorWidth +
                                down.implicitIndicatorWidth)
        implicitHeight: Math.max(implicitContentHeight + topPadding + bottomPadding,
                                 implicitBackgroundHeight,
                                 up.implicitIndicatorHeight,
                                 down.implicitIndicatorHeight)

        padding: 6
        leftPadding: padding + (mySpinBox.mirrored ? (up.indicator ? up.indicator.width : 0) : (down.indicator ? down.indicator.width : 0))
        rightPadding: padding + (mySpinBox.mirrored ? (down.indicator ? down.indicator.width : 0) : (up.indicator ? up.indicator.width : 0))

        validator: IntValidator {
            locale: mySpinBox.locale.name
            bottom: Math.min(mySpinBox.from, mySpinBox.to)
            top: Math.max(mySpinBox.from, mySpinBox.to)
        }

        contentItem: TextInput {
            z: 2
            text: mySpinBox.displayText

            font: mySpinBox.font
            color: mySpinBox.palette.text
            selectionColor: mySpinBox.palette.highlight
            selectedTextColor: mySpinBox.palette.highlightedText
            horizontalAlignment: Qt.AlignHCenter
            verticalAlignment: Qt.AlignVCenter

            readOnly: !mySpinBox.editable
            validator: mySpinBox.validator
            inputMethodHints: mySpinBox.inputMethodHints

            MouseArea {
                anchors.fill: parent
                enabled: true
                hoverEnabled: true
                propagateComposedEvents: true
                acceptedButtons: Qt.LeftButton
                cursorShape: Qt.PointingHandCursor
            }

            Rectangle {
                x: -6 - (mySpinBox.down.indicator ? 1 : 0)
                y: -6
                width: mySpinBox.width - (mySpinBox.up.indicator ? mySpinBox.up.indicator.width - 1 : 0) - (mySpinBox.down.indicator ? mySpinBox.down.indicator.width - 1 : 0)
                height: mySpinBox.height
                visible: mySpinBox.activeFocus
                color: "transparent"
                border.color: mySpinBox.palette.highlight
                border.width: 2
            }
        }

        up.indicator: Rectangle {
            x: mySpinBox.mirrored ? 0 : parent.width - width
            height: parent.height
            implicitWidth: 40
            implicitHeight: 40
            color: mySpinBox.up.pressed ? mySpinBox.palette.mid : mySpinBox.palette.button

            Rectangle {
                x: (parent.width - width) / 2
                y: (parent.height - height) / 2
                width: parent.width / 3
                height: 2
                color: enabled ? mySpinBox.palette.buttonText : mySpinBox.palette.mid
            }
            Rectangle {
                x: (parent.width - width) / 2
                y: (parent.height - height) / 2
                width: 2
                height: parent.width / 3
                color: enabled ? mySpinBox.palette.buttonText : mySpinBox.palette.mid
            }
        }

        down.indicator: Rectangle {
            x: mySpinBox.mirrored ? parent.width - width : 0
            height: parent.height
            implicitWidth: 40
            implicitHeight: 40
            color: mySpinBox.down.pressed ? mySpinBox.palette.mid : mySpinBox.palette.button

            Rectangle {
                x: (parent.width - width) / 2
                y: (parent.height - height) / 2
                width: parent.width / 3
                height: 2
                color: enabled ? mySpinBox.palette.buttonText : mySpinBox.palette.mid
            }
        }

        background: Rectangle {
            implicitWidth: 140
            color: enabled ? mySpinBox.palette.base : mySpinBox.palette.button
            border.color: mySpinBox.palette.button
        }
    }
}

import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Window 2.15

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

    Button {
        text: "Button"
        onPressed: console.log("pressed", pressed)
        onHoveredChanged: console.log("hovered", hovered)

        MouseArea {
            anchors.fill: parent
            hoverEnabled: true
            acceptedButtons: Qt.NoButton
        }
    }
}