[Kpt. Kozloff]

Hi,
Recently i spotted that some ships are sinking without leaving a mark on the map (red nor grey) but these sinkings appear in the captains log. When you exit mission all ships sunk are noted as allied. Have you got any idea what's causing it?
Grey markings on the map sometimes turn out to be allied in the end as well. (?)
This is a random thing in both cases though. A bug...?

I'm using GWX + Ocean Blue's Final Damage Mod, just started a new career October 1939 2nd patrol. And no, i'm not saving the game in 50 km vicinity of the target/ship nor land.

Any ideas guys?
Thanks.