Continuum does not work with the mod_proxy config shown in site docs:
All links in the continuum webapp are absolute, and ProxyPassReverse only does rewrite of headers, not page content.
This means that clicking on one of continuums links bypasses the proxy and goes directly to localhost:8080/continuum/.
There is a 3rd-party module (mod_proxy_html) that does rewrite of page content, but it seems like a waste of CPU cycles.
Making continuum generate relative links would probably be more efficient.