I get this perfectly straight line when using portrait mode. I was using Mavic nd16 filter. The effect is seen on all photos when the sun is in the frame. The position of it changes slightly during camera move (panorama). It looks like change colour in photoshop.

have anyone same problem?
Tnx

Try to shoot the same photo without the filter.
When using filters in front of any lens, light is bounced between the surface of the glass of the lens and the surface of the filter.
The results can be weird and surprising artifacts in the photo.

This was fixed with the latest firmware. You need to upgrade to it to fix it.

MARSAN Posted at 2017-7-20 02:13
Try to shoot the same photo without the filter.
When using filters in front of any lens, light is bounced between the surface of the glass of the lens and the surface of the filter.
The results can be weird and surprising artifacts in the photo.

It’s a problem with the image processing, nothing to do with filters.

dancopter Posted at 2017-7-20 04:01
It’s a problem with the image processing, nothing to do with filters.

Thanks, I updated and check and report if it's gone.