Causing Elemental Ailments via Spellslinger doesn't add energy to Cast On Elemental Ailment

This must be a bug. Freezing enemies with Spellslinger doesn't add energy to Cast On Elemental Ailment.

There's no description in either skill that would suggest this should happen. It must be a bug.

GGG please fix.

From the in-game note on Energy:

"[...]Energy cannot be gained from direct effects of Triggered Skills."

Since spells cast via spellslinger are triggered skills, they cannot generate energy for any other meta skills.

From the in-game note on Trigger:

"Many effects can cause a skill to Trigger. A Triggered Skill occurs immediately..."

This strictly implies automation. The effect causing the trigger is max energy - at max energy the Triggered Skills should cast immediately on reaching max energy. Automatic.

But Spellslinger is not automatic, it's manual cast. That's not a trigger.

My argument is that Spellslinger is tagged incorrectly as Trigger.