Not sure if this has been mentioned yet (if so, sorry!), but on a 1440p display with build 90861, some of the tutorial messages cover up important UI elements.  A couple of examples are attached below. While this does not really affect the gameplay, it does make it difficult to view various information at some points.  That being said, for a pre-alpha this game is quite polished :) 

Other than some small niggles with the UI though, first impressions are great with the game!  Lots of cool mechanics present here, especially the random events, which should make this a nice change from the typical Civ game.