Custom Attinuation bug?

[LordSalem]

I'm copying down a mead clone recipe into BF but I want a much higher final gravity for it.

https://www.brewersfriend.com/homebrew/recipe/view/817271/viking-blod-clone

I'm shooting for a 1.015 FG but even setting the custom attinuation down to 1% it's still showing an FG of 1.007

I'm not sure about the math here, but I think that's wrong?

 

[Yooper]

You should be able to set the custom attenuation, no matter what the % is so I'll check into that. Y