My YouTube channel.

I would try to scroll down the modify panel. You will see these settings that have to do with shadows.



I think it will be solved if you choose the one on the far right, but feel free to experiment with these 4 buttons.


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My YouTube Channel
Phoenix   ;)

Animagic
Wow! That beats me! How did you guess?

My YouTube channel.

I had to go through all lights actually, because there wasn't any object that could cast those shadows. But they disappeared when shadows were turned off globally, so they had to come from somewhere.

I think this could actually count as a bug, because the "shadow" shouldn't go through the wall. You can almost consider it to be "negative light", because it is the inverse of what's cast on the inside wall.

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