Hi thirdm.
You are right ! emacs window gets overlapped
Code:
kern.version=OpenBSD 5.3 (GENERIC) #36: Tue Mar 12 20:52:24 MDT 2013
deraadt@macppc.openbsd.org:/usr/src/sys/arch/macppc/compile/GENERIC
emacs version : 24.2.1
Such a bug doesn't occur on i386 (OpenBSD current + emacs.24.2.1)