Living Lightning not spawn when Tornado is hit with lightning damage

I've run into the situation where I have Tornado supported by Living Lightning. The Tornado itself is not dealing lightning damage, but the projectile skill I'm using to hit the tornado does. I can see the tornado gain the lightning damage due the visual (lightnings etc.).

This lightning-enhanced tornado does not spawn the minions when it hits enemies. Is this intended effect? I suppose that since the extra lightning damage of the tornado is considered reflected damage then monsters are "hitting themselves" so thus no Living Lightning minions, but is that not still considered 'hits'?

A clarification is appreciated whether this is expected behavior or not.

Reflect damage cannot proc "on hit" effects.