Bio, post some screenshots of jab 1 and 3 range, ill compare that with the sparks from normal brawl. if u dont mind, zoom in as much as you possibly can such that all of sonic and the hitbubble is visible, it will help...
Also im gonna say it. if the jab doesnt line up with the in-game screenshots of its maximum range, this whole hitbubble thing is wrong. the bair/ftilt might just be a random incident, its the first time ive seen anything like it. but on a lot of character boards ive seen a lot of attacks with truly ridiculous hitboxes, not surprisingly all involving scaling and lingering attacks. far too many instances of it being inccorect to be believed anymore imo (if jab is wrong)