Trigger gem energy gain was not in the right place and it was far too easy to use ailments to trigger spells. One problem with the previous system is that if we balanced it to make triggering happen in boss fights then the triggering would happen far too often during clearing.
In order to address this we are now making "Monster Power" part of the calculation for energy gain. This means that it's far easier to trigger skills from Unique Monsters than it is from normal monsters, but you also hit many more normal monsters when fighting.
We have also rebalanced all energy gain across the board.