I took a few images of sunset with a tripod (each shot with -3EV and +3EV). I'm working with Hugin. Setting control points I have done manually. Since I'm encountering heavily ghosting issues I simplified my setup:
I took two images A and B (both 0EV) and stitched them with option "Exposure corrected, low dynamic range". The result is fine. There is no ghosting or other issues.
Then I tried to take one additional image A' of the sun (-3EV) and put it to the same stack as A. For image A' I also set control points between A and A'. The alignment seems to be fine.
Between A and B there is now partially a ghosting. When stitching I tried "Exposure fused from stacks" as well as "Exposure fused from any arragement" and "High dynamic range". The ghosting is always there.
Next I tried to set a mask on the A' (-3EV) image with option "include region from stack" to have a just a better exposure of the sun. But it does not solve the problem of the blending to B.
Note: The ghosting happens on mountains in the distance.
Second note: Since stitching of A and B with option "Exposure corrected, low dynamic range" is working fine I assume there is no parallax problem.
Any idea what is causing the ghosting?
I could also provide a sample project.
Edit: Single images: