Leader Dilligence Trait dropping

I tried to find the original post, but I think I have isolated the problem with leaders losing diligence when being hired to the activation of the Exploitation (Malevolence) Cultural Trait, which is supposed to give +4 to non-native species.  It appears to cause a -6 to native leaders though.  This only reflects AFTER they are selected though, and doesn't appear to affect existing leaders.