I used to get at least 1K exp pts for helping in boss battles and I notice I'm only getting "1" is this a bug or a change? I hope it's not a change!
Neither, you only get the bonus points on a set number of bosses over a period of time. Seems like most things in game reset at the 22 or 24 hour mark and just a guess but probably get the bonus for the first 25 or 35 bosses you help. Once you exceed that number you only get 1 point. Then once the timer resets you get the bonus again.