Unity 5.5: Realtime lighting now affects static objects?

Graphics Lighting & Global Illumination
1

I do not understand: Apparently, Realtime lights now also affect static objects and make them cast shadow too!?

This is very confusing because there is no way of lighting realtime separately without impacting on static objects. I could possibly use the light ‘Culling Mask’ feature, but it prevents casting shadows onto static objects, unless the receiver also has that layer!
Also ‘Layer’ are mostly useful for physics, I would prefer to not require them also for lighting purposes.

So the only option is to use Baking: Mixed, which is very, very restrictive.
The documentation at Unity - Scripting API: LightmappingMode.Realtime
incorrectly says:
LightmappingMode.Realtime
Description
The light affects only dynamic objects, not direct or indirect baking.

Is this a bug? I have updated to Unity 5.5 Patch 2 and it still happens.

2

Realtime lights always affected static objects. I’m confused. What are you trying to do?

3

Ah, I forgot to mention I was using a Mobile / Diffuse shader, in Forward rendering. In this particular setup, the realtime lights are not affecting static objects.
I find it useful because you can tweak baked lights and realtime lights completely separately.