"Mana Spent Gained as Ward" affix not working for triggered spells

Bug Reports
1

Issue
The affix “Mana Spent Gained as Ward” is not working mana costed by triggered spells.

How to reproduce

  1. Equipe gears and/or idols that have the affix “Mana Spent Gained as Ward”. Make sure the character won’t generate ward in any other way.
  2. Use a zero mana skill that does not gain ward to trigger other spells. For example, Mana Strike.
  3. Trigger other spells that cost mana. It can be done by using unique like “Harbinger of Stars”.

Actual Result
No ward is generated.

Expected Result
Ward should be generated.