I'll just list the issues we've noticed which I'm sure have been mentioned but just letting you know what we have seen on our end :)
The Double Log-in- you try to load in, it takes ages then times out and when you try again it hits snapshot 16 then immediately loads in.
Freeport Load-ins- when sailing into an area with a Freeport you get a giant wall of what looks like fire and the moment you enter it almost immediately sinks your ship.
Resource Spawns- islands are bare, resources are not respawning.
Beds Not Working- if you have a bed on your ship and you go near a claimed area or a lawless island and die you are unable to respawn on that bed.
Ship Ladders- The ladder you apply to the ship needs to be easier to climb up (in my opinion) you spend too much time in the water trying to get that 'climb up' option.
Mast Destroy Option- I honestly don't see a point of having a destroy option on the scroll for the masts, almost clicked it a few times when adjusting sails.
Alpha Animals- I'm not sure why there are level 200+ alphas at the start of this game, it seems a little much. perhaps lower level alphas would be hard but not impossible.
I think that's about it for me, loving the game so far it has many great aspects of it but some things that I think tweeking a little would be nice.