I'm not sure if this is part of the same bug, but Steven Mitchell reports:

Several months ago, I wrote to the group about XEmacs not starting right
in Enlightenment E17, i.e. that the left third of the screen was white  
from bottom clear up to covering the minimize/maximize/exit buttons at  
the top.  It fixes itself if you resize the screen by a corner. 

So I put into my init.el a workaround: 
;---- fix to start up correctly in enlightenment E17 
(custom-set-faces  '(default ((t (:foreground "yellow" :background
  "black" :size "19pt"))) t)) 
(redisplay-frame) 
(custom-set-faces  '(default ((t (:foreground "yellow" :background
  "black" :size "20pt"))) t)) 
 
You replied that when you got time, you would look into that. 
 
I just had one further piece of information: 
Previously the problem existed while using 21.4.24. 
Since I installed 24.5.31 2 days ago, it has the same behavior, so none
of the changes since have affected the problem.

on XEmacs Beta in <4E1713D6.9050503@bnin.net> 2011-07-08.

Ray Toy writes: Another display glitch: When the initial frame is
resized, the Help menu button is not displayed.  If I resize the
frame slightly (in any direction), the Help menu is displayed again. 

Steve replied: OK, there are some redisplay glitches where some
parts of XEmacs think the frame is of a different size than others
do.  This is probably just a another manifestation.