@korina Thanks for your quick response. I hope you change your rendering indeed, because it is unusable in certain regions, especially in the mornings. Meteoblue's rendering style works better, IMHO.
@TZ
You are right, this is obvious when latitude-longitude grid is shown (see Settings).
The reflection of the sun moves a little more north each day and will disappear before reappearing around September 20 at the time of the equinox.