Maybe a photo will help? (what did we do before digital?)
I have a Trek 1000, if that helps at all. I've noticed no issue with steering. Sometimes I bump into it a bit when I am standing, but that may be due to a little too much ME, not really the bento box's fault. It's never really bothered me and I so like having that there for things that it would outweigh the annoyance of the occasional bump into it.