from another thread I got this q3 map: q3-level.zip
I loaded it with the example #16.Quake3MapShader and I found a problem with the shader objects in there...
there are light things (bulbs, lanterns), but they are only lit if you look at them from a specific angle...
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there is nothing but the map and the camera, so no dynamic lights or such...
I tried it with the DX9 and OpenGL drivers...