[@djpaul Keymaster 14 years, 1 month ago]

Thanks for confirming.

I’ve discovered BP 1.6.1 has a problem with topics not appearing in group forum lists when WP is set up to use a persistant object cache. I’m using the APC object cache plugin, and I’m 99% confident it’s occuring on one of our production memcached environments, too. Investigating.

https://buddypress.trac.wordpress.org/ticket/4522