just got this problem for the first time :( was flying from LEMH to EDDC dusk into night...never happened before, but also was the first flight into night...

I can confirm this ! and it´s driving me nuts !!!!
I have this even at medium draw distance, i have an i7 gtx1060 6gig and 32gig ram and p3d on ssd, so yeah, there you go

I can report the same issue ! this is a real dealbreaker for me, I can´t fly with this