Saka faction not able to implement type 4 government

[ooji]

I have been playing as Saka for a while now and every time I conquer large settlement, I either have to exterminate or expel the population and hope they don't rebel due to my nomad faction limitations. To keep order in those settlements, I try to have type 4 government so that the local governors would keep things rolling with their influences. Thing is, after a turn the governor comes in, it appears in his stats the he is an impostor even though it's his rightful settlement to work in. Is there a way to fix this bug? It's really delaying my conquests. Thanks!

[War lord]

The script has became bugged, I'm afraid the only solution is a restart.