Native error dialog on MacOS does not show exclamation mark icon

[wouterbt]

Operating system: MacOS 14.2.1 (Sonoma)
wxPython version & source: 4.2.1 (Phoenix) installed by pip from wheel wxPython-4.2.1-cp39-cp39-macosx_10_10_universal2.whl
Python version & source: 3.9.12 included with MacOS

Description of the problem:

wx.MessageDialog uses native dialog windows on MacOS. When used with the wx.ICON_ERROR style, it should show an error icon (exclamation mark) in the dialog. However, it only does this in combination with the wx.YES_NO style:

And not with the wx.OK style or with no other styles (the default):

The expected behaviour is that the exclamation mark icon is shown in both instances.

Code Example (click to expand)

import wx
app = wx.App()
frame = wx.Frame()

dlg = wx.MessageDialog(frame, 'text', 'Error', wx.ICON_ERROR | wx.OK)
dlg.ShowModal()
dlg.Destroy()

dlg = wx.MessageDialog(frame, 'text', 'Error', wx.ICON_ERROR | wx.YES_NO)
dlg.ShowModal()