When within the current session the site has been accessed in the channelmanager, the contextpath keeps being included.

Reproduction path:

• Configure the site and cms to run on a single domain, so the session will be shared. Strip the contextpath of the site, though. See [0] for an example Apache vhost.
• Set hst:showcontextpath & hst:showport to false on the hst virtualhost
• Check the site to confirm that the context path does not appear in the generated links
• Open the site in the channelmanager (Note it will access the site using the contextpath, even if not necessary, see HSTTWO-2245)
• Open the site outside of the CMS context, but in the same browser (i.e. with the same session)

Expected: links do not include the context path
Actual result: all links include the context path

[0] <VirtualHost *:80>
ServerName localhost

ProxyPreserveHost On

ProxyPass /cms/ http://localhost:8080/cms/
ProxyPassReverse /cms/ http://localhost:8080/cms/

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

ProxyPass / http://localhost:8080/site/
ProxyPassReverse / http://localhost:8080/site/
ProxyPassReverseCookiePath /site /
</VirtualHost>