[Plugin: W3 Total Cache] WWW and Non WWW causing issues in W3TC

I had the same problem, but my www redirect was at the top of the .htaccess file.

The issue was the # RewriteCond %{REQUEST_URI} \/$ directive. Once I commented that out, it worked perfectly. Is there a specific reason for that directive?

Can you paste all of your rules so I can be sure?

Just to clarify… W3TC does not do this remapping in its set of default htaccess rules, correct? I believe that SuperCache does, which might lead to confusion for those who are switching.

Correct.