Any Class Crafted negative requirements

I'm testing out an eta build with brainwash and this crafted accessory, which has -15 intelligence requirement. When I put the two into wynnbuilder, it says I need to assign 35 points into intelligence in order to wear the ring (example build for reference). Is this how it works ingame, or is it just a wynnbuilder inaccuracy?

 

I'm sure that's how it works ingame, which is goofy
Try making no int req at all

 

Well that’s dumb. No mana extra mana steal for me then, I guess.