Bugged Rage Generation when using Smite with the "Veteran's Wrath" Notable

I have a six-link with 5 supports and a single attack skill.

I have an Oakbranch Tincture (Gain 3 Rage on Melee Weapon Hit) and the Veteran's Wrath Notable (Gain 2 Rage on Melee Hit) assigned (via a boot annoint).

When I user the 5 skills below, I see different behaviours depending on the source of the Rage generation.

I believe that Smite (and its transfigured variants) are bugged when using "Gain 2 Rage on Melee Hit" so that only the melee hit (and not the area damage) trigger rage generation.

Smite (and its transfigured variants) generate Rage without any issue when using a source of "Gain 3 Rage on Melee Weapon Hit".

Molten Strike, Lightning Strike & Elemental Hit do not show this split in behaviour, regardless of whether the melee hit or the area damage hits the enemy.

Below is a tabular summary of the behaviours I see during normal play.

| Skill | Veteran's Wrath | Oakbranch Tincture |
|---------------------------|-----------------------|-----------------------|
| Smite | Rage stays ~ 0 | Rage Increases to Max |
| Smite of Divine Judgement | Rage stays ~ 0 | Rage Increases to Max |
| Molten Strike | Rage Increases to Max | Rage Increases to Max |
| Lightning Strike | Rage Increases to Max | Rage Increases to Max |
| Elemental Hit | Rage Increases to Max | Rage Increases to Max |