We recently started using CloudFlare (http://cloudflare.com) to protect a few of our websites. One side effect we've found is that the WP Super Cache Advanced settings are not displayed. The tab and available options are displayed, but all of the settings are unselected. Setting them and pressing save returns them all to the unselected state.
Bypassing Cloudflare (direct.mydomain.com), all of the Advanced settings are displayed properly.
I'm bringing this up as an issue with WP Super Cache, as opposed to CloudFlare, as it is the only plugin that I'm having the issue with.
Is there something different about how configuration values are read by WP Super Cache that may be impacted by the introduction of a reverse proxy like CloudFlare?