I've just rescued a pod survivor who joined me, his name is Biaga. For some reason he has "Sold prisoner x 2" mood even though it has been many years since I sold anyone into slavery.
Save file: https://www.dropbox.com/s/o7vd2e0xmbm7kod/prisoner.rws?dl=0
I have been attempting to reproduce this. It does not seem to be occuring in vanilla unstable branch. Do you have any other specifics or steps have this bug appear?
Not really, sorry - no idea how this happened. Perhaps it's fixed in the unstable!
I'll keep an eye out.