If your map is a color relief map with the Terrain representation set to Hill shaded or Reflectance in the 2D View, these lighting settings are applied to the 3D View and the Lighting tab settings in the 3D View Properties window have no effect.

To use the Lighting tab settings from the 3D View Properties window, set the Terrain representation to Color only for all color relief layers in 2D View when using those layers to create a 3D View.

Updated November 21, 2019