WIP Component Pick Release does not honour BOM quantity ratios

All

We have the following BOM set-up

Assy A is made of two compents (Comp B & Comp C). To make 1*Assy A we require 1 * Comp B & 6* Comp C.

I create a discrete WIP Job for 10 off Assy A and observe my compent requirements correctly as follows:-

Comp B requirement 10, Comp C requirement 60

I have the following on-hand:-

Comp B on-hand 10, Comp C on-hand 59

I run WIP Component Pick Release (no Pickset) and I get the following move order quantities

Comp B Pick 10, Comp C Pick 59

I was expecting

Comp B Pick 9, Comp C Pick 54 as this maintains the BOM quantity Ratios