Righteous Glory active bug

The tooltip on Righteous Glory says that the active gives movement speed when moving towards enemy champions or enemy turrets. http://imgur.com/2qlQGJw

However right now, there is no movement speed buff when activating it while moving towards enemy turrets. I made a small video showing this. In this video you first see the active working correctly when cast moving towards an enemy champion, then two clips of me activating the item when walking towards enemy turrets where the movement speed isn't applied.

So either the tooltip is incorrect and the part about enemy turrets should be removed, or the active isn't working correctly and should be fixed.