Bare with me, this is my first bug report.
Character: Raquelis
Server: Atiesh
Shaman Talent: Unleashed Rage.
When you crit, it gives an AP buff to the group.
When the Unleashed Rage buff is active: Crusader strength proc effect “Holy Strength” will not take. You can still gain the healing effect.
If Unleashed rage is not active, and you proc Crusader; the effect will take. Afterwards, if you crit, Unleashed Rage will take and not overwrite Holy Strength.
In all cases, the healing from Crusader still works.