Skytrash

Ive noticed, since the Dec update, I have been flying the F4J (UK) alot, and before the update, as long as i hit the target, the Skyflash DF was always a kill when i hit an Aircraft. Now, its almost a 9/10 chance i only damage the enemy and not destroy. Did a recent update or patch change the damage of the skyflash? I have read all the update notes and haven’t seen anything.