Hi ! Looks like I've found the problem, looks like a bug in emacs, couldn't find anything on the mailing lists.
It only happends when I load my font config, can you try loading it and see if it happens to you ? Just place the cursos under a character and see if it disappears. (set-frame-font "-xos4-terminus-bold-r-normal--20-200-72-72-c-100-iso8859-1") my terminus font is terminus-font-4.28p1 Thanks, if it works for you I might try updating it all.
