Challenge log bonus xp not scaling above 50

[MetalheroD]

it scales properly for DoH and DoL. so it's weird it doesn't do the same for battle classes. not that it's hard to get exp otherwise, but i could imagine for someone only being able to play at weekends the challange log bonus was a nice boost up until 50

Again, the issue here is AFTER 50. Up to 50, it works just fine.