QWidget showNormal() not working when minimized on X11 and Wayland

from PySide6.QtWidgets import QApplication, QWidget
from PySide6.QtCore import QTimer
import sys

def window_show_normal():
    print('Restoring window!')

    # Window not shown on Ubuntu X11 and Wayland, works on Windows 10
    # Window hide() followed by showNormal() is a workaround
    # window.hide()

    # Restore window should work on all desktops!
    window.showNormal()


if __name__ == '__main__':
    app = QApplication(sys.argv)

    window = QWidget()
    window.resize(300, 200)
    window.setWindowTitle('Simple Window')

    # Minimize window
    window.showMinimized()

    # Restore window after 3 seconds
    QTimer.singleShot(3000, window_show_normal)

    sys.exit(app.exec())