[Bug-AUCTeX] 2013-10-14; highlighting of \cite[] commands

[emacs user]

Dear AucTeX friends,

I find that when I move the mouse over a text such as 

Blah blah asdf asdf  \citep[e.g.,][]{first-ref}. Blah blah asdf asdf \citep[e.g.,][]{second-ref}.  Blah blah more. 

The green highlighting starts with the first \citep and ends only at the } of the *second* \citep, highlighting everything in between.

Best, E

Emacs  : GNU Emacs 24.3.1 (x86_64-apple-darwin11.4.2, Carbon Version 1.6.0 AppKit 1138.51)

 of 2013-10-27 on Yukikaze.local

Package: 2013-10-14

current state:

==============

(setq

 AUCTeX-date "2013-10-14"

 window-system 'mac

 LaTeX-version "2e"