rewards disappearing

I have noticed on the leader board today that if I do a couple of battles the leader board will reflect the total, but when I exit the game and come back and do 1 battle and look at the leader board the total score is the last amount of rewards I received. I went from 0 to 6 (2 battle X 3 rewards) and left the game and did 2 more battles and went to 6 and left the game and after completing 1 battle I'm at 3.

Anyone else having this issue of disappearing rewards?