QInputDialog blocks the execution of child threads

import sys
import threading
import time

from PySide6 import QtCore, QtWidgets


class Runnable(QtCore.QRunnable):
    def run(self):
        fun()


class Thread(QtCore.QThread):
    def run(self):
        fun()


class Worker(QtCore.QObject):
    @QtCore.Slot()
    def task(self):
        fun()


def fun():
    for i in range(10):
        print(i)
        time.sleep(1)


def handle_timeout():
    value, ok = QtWidgets.QInputDialog.getInt(
        None, "QInputDialog::getInt()", "Percentage:", 25, 0, 100, 1
    )


def main():
    app = QtWidgets.QApplication(sys.argv)

    w = QtWidgets.QWidget()
    w.resize(640, 480)
    w.show()

    runnable = Runnable()
    QtCore.QThreadPool.globalInstance().start(runnable)

    threading.Thread(target=fun, daemon=True).start()

    test_thread = Thread(app)
    test_thread.start()

    worker = Worker()
    worker_thread = QtCore.QThread(app)
    worker.moveToThread(worker_thread)
    worker_thread.started.connect(worker.task)
    worker_thread.start()

    QtCore.QTimer.singleShot(3 * 1000, handle_timeout)

    ret = app.exec()
    test_thread.quit()
    test_thread.wait()
    worker_thread.quit()
    worker_thread.quit()
    sys.exit(-1)


if __name__ == "__main__":
    main()