some projectiles turn around for no reason?

ive been working on a bullet hell-y boss fight and recently suddenly half my projectiles seem to be firing backwards/facing the wrong way for no reason at all, as they were fine before but theyre all messed up. i dont wanna have to reverse the sprites since flipping didnt work and then debug it later down the line since this is definitely unintentional so can someone please explain what is going on?
it happens during the orange projectile phase (4th attack) and the later green projectile phase (after 3 phases) of the “final boss!” level here . thanks.