As far as I know the bug-fixing of previous chapters was closed before the announcement of Ch.9, but I need to share my problem
The problem is: Lochom, Abrey and Shinji - this items doesn't stack in Santoryu set
I replayed the whole camplaign from give up in order to obtain this item, but: Abrey doesn't reduce enemy's armor, and Shinji keeps on collecting points even after 10 - and all attacks after Shinji got 10 points stuns the enemy. Only Lochom works as it is written. So sad, this item set was very interesting!
I wish this information could help, Aero.