[Qt Virtual Keyboard] Example produces lots of warnings at startup

qrc:/content/TextField.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f580e5a500, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference
qrc:/content/TextField.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f580e591e0, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference
qrc:/content/TextField.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f580e59c00, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference
qrc:/content/TextField.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f580e59780, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference
qrc:/content/TextField.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f580e5a1a0, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference
qrc:/content/TextField.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f580e58b20, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference
qrc:/content/TextField.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f580e59d20, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference
qt.qml.binding.removal: Overwriting binding on QQuickAnchors::right at qrc:/content/HandwritingModeButton.qml:74 that was initially bound at qrc:/basic-b2qt.qml:66:17
qt.qml.binding.removal: Overwriting binding on QQuickAnchors::top at qrc:/content/HandwritingModeButton.qml:91 that was initially bound at qrc:/basic-b2qt.qml:65:17
qrc:/content/TextArea.qml:22:17: QML Rectangle: The current style does not support customization of this control (property: "background" item: QQuickRectangle(0x1f5811b80a0, parent=0x0, geometry=0,0 0x0)). Please customize a non-native style (such as Basic, Fusion, Material, etc). For more information, see: https://doc.qt.io/qt-6/qtquickcontrols2-customize.html#customization-reference