I have been loving this beta version, congratulations!
The most common problem I have been facing is the gunners sometimes decide that the target is about 500 m ahead of where it is and all shots clearly aim there, even it the hit chance is like 80%. It seems changing targets sometimes fix it, but it is a problem if there is only 1 enemy ship.
Also, Austro-Hungary empire economy is on drugs in 1900. I had them several times start building 8-12 Battleships per MONTH for a whole year!
Also A very secondary Issue (again in 1900 campaigns) the auto resolve seems to overestimate the capability of the old French "Baguette like" battleship hulls. I get absurd victories on auto resolve when I have those ships, on situations I would be crushed in hulls from other nations. The issue is very apparent because when I change to dreadnought hulls I start to LOSE these auto resolve battles.