I got to try this for a short time today and found a few things.....
1) Broker window....many new features have been added to this and are not present......selecting of class, level, tier, etc
this may be the case on store window as well, but i forgot to look
2) merchant window is stuck in buy mode and lists repair on any merchant, but is not usuable.
3) mender window will not allow you to pick repair
4) no guild bank tab in the banking window
5) group window
a) health and power stats overlap the concentration bar
b) resists #'s are overlapping the descriptions and into the paper doll area
c) breath and casting bars do not function
just as a suggestion for the group window.....if the paper doll were removed, the spacing could be solved and much easier to read.
sorry i did not have alot of time to look this over, but this should give ya a start. thanks for your time, love this UI.