Bug? Shadow on flight tracking map

I was tracking a flight today, when I noticed an annoying bug: the shadow of the airplane graphic is to the southeast of the airplane. If the flight is in the northern hemisphere, the shadow should be above the airplane.

The airplane shadows are always to the bottom-right with a distance from the plane dependent on MSL altitude.

It doesn’t and isn’t intended to account for latitude, season, time of day, overcast layers, or solar eclipses.