The simplist fix:
A) make sure you're NOT on the toon you're trying to fix.
B) Open up UI_<character>_<server>.ini
C) Find all static references to Height= and Width= and delete them.
Code:
Width=1035
Height=84
Width800x600=1035
Height800x600=84
Width1024x768=116
Height1024x768=531
Width1280x1024=1035
Height1280x1024=84
Width1440x900=1035
Height1440x900=84
Note these are examples only. the values listed for those height/width will vary.
You WILL have to go back and resize your chat windows (or just dont delete these entries under [ChatWindow]
that said there's an emergency patch today that I imagine will fix this ANYWAY.