Hello,
I just experienced a very strange bug. We were capturing a 3rd rate. I was in my St Pavel boarding the 3rd Rate. We disengaged and the 3rd rate set on fire. As it blew up it re-engaged my Saint Pavel in boarding action at the exact same time. This caused my entire crew to vanish, even though we were not side by side and my ship was completely undamaged.
The 3rd rate vanished. A friendly ship then attempted to capture my Saint Pavel however when he left the map after doing so, it said he had 0 ships.
Very strange.