Flare weapon's projectile lifetime is too short for ghetto's on uneven terrain.
Replays I guess.
Test game (min 1:30): #19701059.
Real game (min 5:00 exactly): #19652929.
Pic from test game showing point where it disappears.
Trans if floating above that tiny crater but it can't hit the engies.
I think an increase by 10-30% would fix it for most terrain.
The projectile has no drop off so it travels it's full distance in land fights when the lab misses but I don't think this matters much. It'll look bizarre if it's too high regardless.
Haven't checked other labs, but could be normalised according to muzzle velocity.