OK, I’ve just tested BP 1.6.1 on WP 3.4.2 (BP Default theme) in my dev site.
Yes, the same issue is still persistent!
Also, I found an interesting post and I wonder if AJAX change is related with this issue… AJAX changes in BuddyPress 1.6
Yes, my theme is actually BP-Default & my own child theme.
The child theme has custom CSS (only changed the color scheme but the same layout) and a couple minor custom templates for pages.
Anyone knows which template file is for the Groups Directory page??