Bladesworn River's Flow not increasing Shout-Heals

[ori.5829]

River's Flow:

Incoming healing increased. Healing yourself increases flow rate.
Regeneration effects do not trigger flow rate increase

 - Positive Flow (5s): Gain flow per second.

 - Incoming Healing Increase: 10%

 

This trait does not work with 

 

Vigorous Shouts:

Shout skills gain reduced recharge and heal allies. Gain healing power based on your power.

 - Healing: 1,000 (1.2)

 - Recharge Reduced: 20%

 - Radius: 600

 - Gain Healing Power Based on a Percentage of Power: 13%

 

The amount of healing by shouts is not increased by River's Flow, neither in the skill description nor in the combat log.