The docstring of [`_auto_topomaps_coords`](https://github.com/mne-tools/mne-python/blob/03276c7c3d1d5a6cf7ca042f97d6cef51b14422e/mne/channels/layout.py#L622) says that parameter `to_sphere` defaults to `True`. However, this parameter has no default value.
The docstring of
_auto_topomaps_coordssays that parameterto_spheredefaults toTrue. However, this parameter has no default value.