Dispatcher is not caching when Basic Auth is enabled

I have enabled basic auth from dispatcher for our dev and stage server.
But its not caching content when basic auth is enabled.

If I disable basic auth then it works. For basic auth I have added following code on dispatcher

<Directory "${PUBLISH_DOCROOT}">
    <If "req('Host') =~ /(dev|stage)\.example\.com/">
        AuthType Basic
        AuthName "Restricted Content"
        AuthUserFile /etc/httpd/.htpasswd
        Require valid-user
    </If>
    <Else>
        Options Indexes FollowSymLinks
        AllowOverride None
        Require all granted
    </Else>
</Directory>