In PySide6.8 , can not disconnect a signal from a SignalInstance by callable when the connection was made using strings

The following code used to work up in PySide < 6.8

{{connection = QObject.connect(instance, }}

{{             SIGNAL('valueChanged(int)'), }}

{{             instance, }}

{{             SLOT('my_slot_int(int)'), }}

             Qt.ConnectionType.DirectConnection)

# do some stuff

b = instance.valueChanged.disconnect(instance.my_slot_int)

Starting from pyside 6.8 , the disconnection no longer works :

c:\d\work\pyqt-stubs\PySide6-stubs\tests\bug_pyside6.py:39: RuntimeWarning: Failed to disconnect (<bound method SomeClassWithSignal.my_slot_int of <_main_.SomeClassWithSignal(0x233eae2a720) at 0x00000233EC90E480>>) from signal "valueChanged(int)".
  b = instance.valueChanged.disconnect(instance.my_slot_int)
Traceback (most recent call last):
  File "c:\d\work\pyqt-stubs\PySide6-stubs\tests\bug_pyside6.py", line 40, in <module>
    assert b
           ^
AssertionError

See full example in the attached file