Hello Guys,
I'm not quiet sure, if this is really a bug, but I found it confusing.
- In the Quest "Frozen Wings" you have to kill 9 "Twichting Saibaman Wing".
- You got to kill them within the Yahhoy Oil Field.
- When you reached the marked place on the map, there are only "Bang Babe Saibaman" to find.
-> When you kill those "Bang Babe Saibaman" you can see after killing them, that they were actually the "Twichting Saibaman Wings" you need to kill.
Please see also the Screenshot I added :-D.
Hope it helps you :-D
