TypeError in qtDisplay when using PySide6

[vector-space]

I'm using PySide6.11.0 and pythonocc7.9.3 on win11. When I run the demo core_display_activate_manipulator.py I got an error:

Error calling Python override of QWidget::mouseMoveEvent(): Traceback (most recent call last):
File "D:\anaconda3\envs\occqt\Lib\site-packages\OCC\Display\qtDisplay.py", line 411, in mouseMoveEvent
buttons = int(evt.buttons())
^^^^^^^^^^^^^^^^^^
TypeError: int() argument must be a string, a bytes-like object or a real number, not 'MouseButton'

The place where error raises is:

def mouseMoveEvent(self, evt: Any) -> None:
    """
    Called when the mouse is moved.
    """
    pt = evt.pos()
    buttons = int(evt.buttons()) # looks like int() can't convert the thing that evt.buttons() returned
    modifiers = evt.modifiers()

Could you please fix that?