In fact in the first place this should not happen at all.
No light should pass through objects other then transparent or clouds alike ones.
The pass through should be an option.
Martin i think you are so much in TG2 mentality (not a bad thing here)
that you sometimes forget how a beginner or other software user "feels" about these things .
This is one of the TG2 mentality things you have to know about and it is not intuitive (as it looks to you) .
I do not remember a 3D software where a surface has a light source shine through as default .
But coding and render wise it has it place it seems in TG2 .
This is a landscape software at first and the Sun doesn't behave like this .
The artists shouldn't hound around and make excuses because the render does this or that.
At least so much less so much better.
Does this make coding harder?
Probably! But this is not the artists problem!
Basic differences like this adds to the "TG2" is hard to use attitude unnecessarily.
As i said it is not much a problem for me too ,
this would be at the much lower part of the things to make better list.
"Please count how many digit-characters are in 6.378e+006 ? Yes 10.
Now count this 6.378.000 ? Yes more...Wait! Less... 9. Yes 9. Hmm! "This would be a little higher on my list and only a option in the preferences Martin
We have still not a basic content for the beginner and-or a first time user scene .
the first default screen is an empty flat surface ...
A landscape generators first default screen should be a landscape!I have Lightwave and it comes with its own content in a separate DVD.
A beginner can look try and learn many things just playing with those files.
This is one of the things that requires probably no coding so to speak ,
but it looks more like "this is not a problem so much" attitude on Planetside .
Because after so much years i can not think about another reason.