I have this problem on 2 separate WordPress installations (3.3.1 and 3.3.2). They are both multi-site (if that matters).
The arrows allowing me to navigate through pages with posts in wp-admin point to the IP of the server with the WordPress, instead of pointing to the domain name of the proxy, like all the other links.
Does anyone know how to fix this issue? Thanks!
I see there is a similar issue discussed, but with no results, here: http://wordpress.org/support/topic/dashboard-pagination-doesnt-work?replies=15#post-2887880