yup. Hector I was original Drath planet, that i conquered. so the other planet (i don`t know who it belongs to) definitely doesn`t belong to Drath either or it`s also bug because:
1) Freighter`s shuttling between Planet X which belongs to Race X (not Drath) and Hector I (former owner was Drath, now it`s mine)
2) Freighter`s shuttling between Planet X which belongs to Drath also and Hector I (former owner was Drath, now it`s mine)