Oh and this is another bugs, on the day 9? after he got his first codex and est, the rations isn't working and the wits then decreasing one by one until he's finally arrived in Aris.
Seems to be working fine on my end, can you be more specific about how the rations aren't working?
It's intended for Killigan to be consuming 1 ration, drinking some of his canteen water, and getting bad sleep (since he has no bedroll) per day after the Redroot Wilds inn until he reaches Aris.