Can you test that same picture of the building in Wide Angle mode? I'd also like to see what your camera module looks like. Could you take a picture of the camera lens itself, preferably with no flash? And you don't see this line when taking pictures in full daylight?
Thank you for the picture of the camera. I'd still like to see what a low light wide angle shot with the flash looks like with that apartment building shot, if you can recreate it. For that apartment shot, the original is the Main camera with flash, correct? A Wide Angle with flash would be a good comparison.