If you prepare a Xamarin.Forms app to respect iOS Dark Mode, it is apparent that the RadDataForm is only respecting the native elements for Dark Mode.
For example, use my attached reproducible. Notice how the text in the native editors has the appropriate light text, but the background is still stuck on light coloring.
If you try to use Editor style or GroupHeaderStyle, you can't use DynamicResource because the style's properties are not BindableProperties:
We really need these properties to be usable with DynamicResource, so this is a feature request more than a bug report. Update the properties to BindableProperties that with with DynamicResource.
A workaround for this would be to set everything you can to be transparent: