BuddyPress.org

Perhaps it’s just your browser settings?
Your theme has weird markup?
Or even your settings on your pc/mac.

No one’s answering since they haven’t had it before, so it’s not a buddypress problem, meaning that it’s probably a problem from your side.
Which makes it hard to figure out. And most of us don’t give a …. since it’s not buddypress related.

Harsh? Yeah, but your on your own mate. Try changing settings and validating your markup.