This issue only occurs when i run the app on Android. See picture below.
The problem is the “circular dark shade” in the left-hand side of the picture. The effect is exactly as if there was “negative light” with a short dinstance reach. For example rotating the model shown in the photo so it is aligned with the viewport and then zooming in, the dark “shadow” will appear as a circle in the middle, growing bigger as the camera moves closer.
By reducing the scale of the model by a factor 100 the problem disappears, but that causes other problems with script code not designed for a smaller model.
It makes no difference if I tick or untick any of Global Illumination / Mixed Lightning options.
Anyone suggestions why this is?