EventController.get_current_event() causes SEGFAULT

While porting some code from GTK+ 3 to GTK 4 I ran into the following issue: calling EventController.get_current_event in a controller signal handler causes the application to crash.

Minimal example:

"""
This little program shows how one can crasg a PyGObject
application by simply requesting the latest event from
a controller.

1. Start this script
2. Click on the window
"""

import gi

gi.require_version("Gtk", '4.0')

from gi.repository import Gtk


def on_pressed(ctrl, n_press, x, y):
    # This will cause a SEGFAULT:
    print(ctrl.get_current_event())


def window():
    ctrl = Gtk.GestureClick()
    ctrl.connect("pressed", on_pressed)
    w = Gtk.Window.new()
    w.add_controller(ctrl)
    w.show()
    return w


def main():
    app = Gtk.Application.new("org.gaphor.gaphas.ClickTest", 0)

    def activate(app):
        win = window()
        app.add_window(win)

    app.connect("activate", activate)

    app.run()


if __name__ == "__main__":
    main()

Output:

/home/arjan/Development/gaphas/test_get_current_event.py:19: Warning: g_object_get_qdata: assertion 'G_IS_OBJECT (object)' failed
  print(ctrl.get_current_event())
/home/arjan/Development/gaphas/test_get_current_event.py:19: Warning: g_object_is_floating: assertion 'G_IS_OBJECT (object)' failed
  print(ctrl.get_current_event())
/home/arjan/Development/gaphas/test_get_current_event.py:19: Warning: g_object_ref_sink: assertion 'G_IS_OBJECT (object)' failed
  print(ctrl.get_current_event())

** (python:27655): CRITICAL **: 16:13:08.868: pygobject_register_wrapper: assertion 'PyObject_TypeCheck(self, &PyGObject_Type)' failed
<gi.repository.Gdk.ButtonEvent object at 0x7f5594557ee0>
[1]    27655 segmentation fault (core dumped)  python test_get_current_event.py