Guild Wars 2

Anyone have a problem with a character not getting credit for a kill?
Had a level 53 thief in Frostgorge and was getting xp and chests for killing champs and then all of a sudden I wasn’t. Was still doing damage to monsters but was not getting xp when killed or a chest.

Maybe this?

http://wiki.guildwars2.com/wiki/Diminishing_returns

But if it happens every time you log in, no matter how long you have been out of game, do not try to tell them there is a bug of “permanent diminishing returns” or “no returns” I tried to tell them for 6 months and it got me no where.

… or you are a lv53 in a lv70-80 zone and failing to do enough damage to get any credit.