[CRASH|REBOOT|Ubuntu22.04] Unselect a combobox by clicking elsewhere on the GUI makes Ubuntu crash and reboot

// code placeholder

import sys
from PySide6.QtWidgets import (
    QApplication, QComboBox, QLabel, QMainWindow, QVBoxLayout, QWidget)

class MainWindow(QMainWindow):
    def __init__(self) -> None:
        super().__init__()
        layout = QVBoxLayout()
        widget = QWidget(layout=layout)
        label = QLabel("Dummy Label")
        combobox = QComboBox()
        combobox.addItems(['1', '2'])
        layout.addWidget(label)
        layout.addWidget(combobox)
        self.setCentralWidget(widget)


app = QApplication([])
session = MainWindow()
session.show()
sys.exit(app.exec())