aurochs engines are severely misaligned when facing at any non-multiple-of-90 degree angle
some gladiator ships (such as the ei100/m) as well as the aurochs that spawns with 'n' after Anton Nasser's ship in the menu are missing engine effects entirely
autons are all missing engine effects
CC burak missiles use the old missile trail (unsure if intended)
at 45 and -45 degrees facing upwards the engine trails on the: