use some stamina stuff to drain it,wait a few minutes,close cleint.
Got to C:\Program Files\Reverie World Studios\Dawn Of Fantasy\log1.txt
attach that file here.With any luck cause may be in there somewhere,or may give a clue on how to reproduce for one of the qa or dev's.
For the heal,do same thing use heal on injured units,see if we can figure out the cause and the fix for it.
Would also as what slot the city is in thats having these issues.
The more info you can give,the easier it will be to figure out the cause,so would also ask any specific units or area's you have noticed this in.