I've seen it a few times now, it clever something you don't pick up on because you are dead, but i then have watched the player jump xbow jump xbow over and over, it got me to thinking there would be...
I guess in that particular case the person has the Bounty Hunter trait card installed. When you reach the 3rd level,by getting enough kills, it will grant you a powerup almost every kill you get. It will also reset the cooldown. I think the cooldown is for the main weapon but the powerup you get is often a Refresh Cards one. Making you able to use the jumppack a couple of times right after eachother.
@R3DSKY Here's an example. The cooldown is also for the jumppack. There are loads of topics on the Battlefront forum and on Reddit about this being OP and should be nerfed in a future patch.
So proves the game is flawed. Its a built in hack for the game, how about that. Anything to get an advantage over 90% of the rest of the players. I wish i could get a refund for such a lousy game.