I have been able to reproduce this many times now as well as others I fly with, but there are times where a ground unit clearly gets destroyed but does not get registered as a kill within DCS. I would drop 4 JDAMs on small trucks and destroy all 4 but only 1 would show up in the chat feed and notification in the bottom right. Checking with targeting pod, it was confirmed these targets were definitely dead.
We are playing Liberation and noticed this behavior. Liberation itself is counting the units as being destroyed by it's own logic and logging, but DCS is not registering those kills. Is this a known issue?
