Centering a dialog on Wayland

wxPython Users
#1

Hi. I am using Fedora 32, wxPython 4.1.1 on Python3.8.9 on Wayland.

I have to use wayland because otherwise richtextctrl can not paste correctly.

Now I have a new problem. Centering a dialog does not work.
In fact this is a known problem python - wxpython on Wayland is unable to interact with screen coordinates (move a window, GetScreenPosition, etc.) - Stack Overflow

At the same time calling ShowModal() does somehow center the dialog on parent, Show() does not.
Is there a way I can force a dialog to center on parent on Wayland and use the Show() function?
Or is there any hope that this problem will be fixed soon?

Small example:

import wx


class TestFrame(wx.Frame):

    def __init__(self, *args, **kw):
        wx.Frame.__init__(self, *args, **kw)
        self._main_sizer = wx.BoxSizer(wx.VERTICAL)
        self.SetSizer(self._main_sizer)

    def dlg_test(self) -> None:
        TestDialog(self)


class MyApp(wx.App):
    """
    Main class for running the gui.
    """
    def __init__(self):
        wx.App.__init__(self)
        self.frame = None

    def OnInit(self):
        self.frame = TestFrame(None, -1, "Test", size=(500, 500), style=wx.DEFAULT_FRAME_STYLE)
        self.SetTopWindow(self.frame)
        self.frame.Show()
        self.frame.dlg_test()
        return True


class TestDialog(wx.Dialog):

    def __init__(self, parent):
        wx.Dialog.__init__(self, parent, title='Strings', size=(200, 200))
        self._main_vertical_sizer = wx.BoxSizer(wx.VERTICAL)
        self.SetSizer(self._main_vertical_sizer)

        self.CenterOnParent()

        # Show modal shows centered, show alone does not.
        self.Show()
        # self.Destroy()
        #self.ShowModal()


if __name__ == "__main__":
    app = MyApp()
    app.MainLoop()

Thanks.