Lensflares from horison

A very odd thing I discovered last night, especially noticable after turning on lens flare.

Sun lens flare:

Lens flares from the sky seen under my trees off the horizon, while sun is above the view frostrum:

Has anyone else experienced this and is there a simple reason for it?

Lens flares are based on bloom. If there is something as bright as the sun it will also show lens flares. If it’s not as bright but also glowing you can adjust the bloom settings (in particular the Threshold value) of your post process volume, so it won’t show neither bloom nor lens flares.

Yeah, I started suspecting that…which becomes very weird if the horizon suddenly is ‘blomming over’…