Can't Shoot Sails Glitch

[LCountach]

After the Privateering update I can no longer shoot the sails of NPC ships. Previously I was able to punch holes with Cannon Balls and tear lines with Chainshot. Unfortunately now the NPC ships totally ignore me if I shoot their sails and are completely unaffected. I must now hit the center mast directly to damage the ship's sails. I am also seeing a great many NPC ships sailing without unfolding their sails as if they are not moving but they actually are. This must be a glitch and I think the two are related.