the flare can be abused to see the outline of certain parts of structures and objects in the dark way beyond one can actually see with the light itself.
see here:
the outline of a single window can be seen in the dark
https://imgur.com/a/yj4Gchp
observed in:
v0.63.149415
v1.00.149923
happens with:
small storage building (imgur)
power poles
other buildings as well