Lord Van Damm's Pillager Issue

The Lord Van Damm's Pillager currently gives the following effects: +80 attack damage +20% critical strike chance Passive UNIQUE: Critical strikes cause enemies to bleed for an additional 150% of bonus AD as magic damage over 3 seconds and reveal them for the duration.

I noticed something a little odd about it when you take a look at what effects the items build into it give, in particular, Wicked Hatchet and Cloak of Agility. Cloak of Agility gives +20% critical strike chance. Wicked Hatchet gives +10% critical strike chance. Which obviously adds up to +30% critical strike chance. So why does finishing Van Damm's cause you to lose critical chance? I decided this was an error on Riot's part and might have just gotten overlooked, which is why I'm bringing to attention ^_^