Couple tooltip errors I've noticed:
When mousing over the "Rough Seas" (Blue Wave icon) on a ship it gives the "Low Morale" tooltip.
The supply lines incoming/outgoing food total is inaccurate at times. For example it shows green 145, however it's only receiving a surplus of 45/wk not 145 when you hover over it and see the individual lines.
Aside from that I've been having a blast, doing the Phillip campaign and about 30 hours in at the moment. Currently trying to figure out a way to defeat Sparta. My "Campaining army" can hold it's own for awhile but they have ~20 Hoplite units that they keep throwing at me and I get whittled down and only manage to defeat 3-5 of them. And it's a long way's from the Pella Area. The local mercenaries can't hold their own at all.
Recruiting some Tribal Archers form the northern areas and going to ship them down there, see if I can funnel those Spartan Hoplites and pin cushion them. Though they are building a lot of catapults as well to use as their ranged support units. Just hope I can defeat enough of their armies to take a few cities. Not many areas since Thessaly to use my Companion Calvary, all narrow roads and valleys. Very few plains. After Sparta last major player I believe is Persia, own almost half the map currently.