Started the Bloodmoon main quest today and had a couple of issues.
1. Upon returning to Fort Frostmoth after killing the smugglers in 'The Frostmoth Smugglers' quest, I received a journal entry stating that the fort had been attacked.
However, there was no evidence of an attack at all. No bodies, no mention of an attack in dialog with anyone, all the walls were intact, and I was left to figure out what to do next. In Morrowind, the well and some of the walls had been destroyed (though this never actually made sense to me). So my question here is: was leaving the fort intact intentional, or was overlooked and going to be fixed.
2. When I got up to 'The Ritual of Water' I discovered that I couldn't look down when in water, meaning I couldn't go underwater for the quest. After reloading a save, and entering a flooded cave (which spawned me underwater), I also discovered that I couldn't look up either - which meant I was going to drown, as I was unable to leave said cave.
After a bit of testing and traveling back and forth between various locations on Solstheim and Vvardenfel, I discovered that this issue only occurred in Solstheim and it's surrounding waters. Restarting the game solved this issue, but I still have been unable to find a cause for it.

1. I'm not 100% sure, but I
1. I'm not 100% sure, but I think wall destruction is just not implemented yet. Quest should be playable though.
2. What do you mean exactly - does your mouse stop working when near water?
Please post you load order, I could be another mod interfering.