Minor bug I noticed --
When I captured one of my cities back, I noticed that one of the land squares within my zone of control (and right next to my city) was occupied by the enemy city nearby (had that little square around it as if one of your own cities was using the square). This square happened to be a luxury resource. Next turn, I had control of that square again. I noticed this on two occasions.
Odd fluke --
Playing large map with 10 civs. The French for some reason have opted not to build cavalry or tanks/mobile infantry. They have the resources and tech for both. They have bombers... so I know they can build tanks. We're in the modern age now.
They are moving one HUGE stack of 175+ infantry (and some riflemen/swordmen/musketters/etc) around the board. (Man, it takes forever to watch them move if they are in visual range.) I have a spy and they have 220 Infantry plus several other obsolete foot units... but nothing at all that can move more than one square at a time.
Good news is that I have noticed that the AI now attacks more aggressively with Infantry. They lose about 6 to one vs. defending Infantry... but at least they attack.
If the AI divided this stack and spread it across the front, it would easily crush everything in front of it. But it seems to just meander back and forth and accomplishes very little. (I've got a nuke ready for it. First time I ever had to consider a "first strike").
Why would this one civ not build a single cav or tank unit when it has the ability to do so? They are Communist. Maybe they have reached a cap where they can't support more units? But they are taking loses... seems they would eventually be able to build more and I would see some tanks.
Trading -- still insane
As usual, I'm trailing in the tech race in the beginning to industrial age. In industrial times I have offered 2 resources plus 2 luxuries, cash, etc. for one single tech (not even one of the ones further up the tree). It seems that once you put a luxury on the table, the deal is dead... even if you were close before. This seems ridiculous to remove most of the players viable trading chips. Especially since the AI still seems to trade as if it was the Borg
This is definately to the AI's detriment. A few lack rubber... no Infantry to defend themselves... China lacks coal and has no railroads and has stagnate population growth. I'm giving the stuff away as gifts to my allies so they don't collapse.
My trading strategy now is to bankrupt the AI which it seems willing to participate in. Luckily I control 4 luxuries and the AI is willing to pay 30 to 100 gold per turn for them. (modern age).
Overall... patch seems good (with exception of trading issue... which is "major" issue in my opinion). Tweaks in the way the units attack has made the game more challenging. (Cav would always avoid attacking Infantry before... and I rarely saw Infantry used offensively)