In the docs it is suggested to not use ProxyPassReverseCookiePath. However, without using it I had serios issues as the session was always timeouted instantly after login.
ProxyPassReverseCookiePath /scm /scm
in addition to the localhost setting and the forwarded=true it just worked. Don't ask me why setting the reverse for the cookie path to the same thing actually works - but it did. May the suggestion in the docs should be thought over again. Environment: debian 7.2 apache 2.2.22-13 standard jetty server as provided in the bundle