The issues I've met:
1. I had a disconnect issue (on my side). After I reconnected and got into the game, the ship was "in battle" state for an hour or so. It took another login to fix the issue.
2. There was an odd issue with destroyer hitting the shore line. In this particular case, he was outside of water totally, due to the shore curve. The problem was that he was impossible to hit. I came at 2 km range with Cleveland and made 2 full salvos. It is pretty much impossible to miss. 0 hits. After he moved himself he became vulnerable again.
Hope it helps....