You have a Apache running and you have a permanent redirect configured. For example;
Redirect permanent /subfolder/ /
This would redirect www.yoursite.com/subfolder to www.yoursite.com.

Then later on you to add proxy config:

ProxyPass / http://localhost:8080/site/
ProxyPassReverse / http://localhost:8080/site/
ProxyPassReverseCookiePath /site /


But after that your redirect fails. It turns out that ProxyPass config overrules Redirect. Add exclusion to the ProxyPass to fix this:


ProxyPass /subfolder !
ProxyPass / http://localhost:8080/site/
ProxyPassReverse / http://localhost:8080/site/
ProxyPassReverseCookiePath /site /


Note that the exclusion is before others.