Can't figure out why Facebook display differently on Firefox vs. Chrome

[Happy Hopping]

On every one of my friend's wall, if I use Firefox, it shows her wall post, then it says Recent Stories, which is a repeat of what I just viewed a few seconds ago. So essentially, the same post is repeated less than few inch down on the wall display

But by viewing the same wall(s) using Chrome, Chrome does not display Recent Stories, so I didn't see the repeated post.

Is there a way to fix this?