HTTP request data missing from my logging profile results

BIGIP LTM version 13.0.1

I'm trying to set up a logging profile for our F5's so they will send request logs to a remote syslog server.

Unfortunately even though I am able to see the packets being sent to the syslog server, they only contain the date and F5 host information, not the HTTP request data.

To set it up, I created the logging profile:

ltm profile request-log /Common/request-syslog {
    app-service none
    defaults-from /Common/request-log
    log-request-logging-errors no
    log-response-by-default yes
    log-response-logging-errors disabled
    proxy-close-on-error no
    proxy-respond-on-logging-error no
    proxy-response none
    request-log-error-pool none
    request-log-error-protocol mds-udp
    request-log-error-template none
    request-log-pool /Common/Syslog
    request-log-protocol mds-udp
    request-log-template "<160> $DATE_MON $DATE_D $TIME_HH24:$TIME_MM:$TIME_SS $BIGIP_HOSTNAME $DATE_YYYY $HTTP_METHOD $HTTP_PATH $HTTP_QUERY $HTTP_REQUEST"
    request-logging enabled
    response-log-error-pool none
    response-log-error-protocol mds-udp
    response-log-error-template none
    response-log-pool /Common/Syslog
    response-log-protocol mds-udp
    response-log-template "<160> $DATE_MON $DATE_D $TIME_HH24:$TIME_MM:$TIME_SS $BIGIP_HOSTNAME $DATE_YYYY          $HTTP_METHOD $HTTP_PATH $HTTP_QUERY $HTTP_REQUEST"
    response-logging disabled
}

When I issue a HTTP request to the virtual host I attached this logging profile to, <160> $DATE_MON $DATE_D $TIME_HH24:$TIME_MM:$TIME_SS $BIGIP_HOSTNAME $DATE_YYYY are all logged,

but $HTTP_METHOD $HTTP_PATH $HTTP_QUERY $HTTP_REQUEST are NOT included in the packet payload.

Here is a copy of the virtual host entry:

`

ltm virtual /Common/npddvaultdev1076_https {
    description "Dev Site"
    destination /Common/10.212.71.16:443
    ip-protocol tcp
    mask 255.255.255.255
    persist {
        /Common/source_addr {
            default yes
        }
    }
    pool /Common/npddvaultdev1076_http.pool
    profiles {
        /Common/request-syslog { }
        /Common/tcp { }
        /Common/wildcard.dev.foo.com {
            context clientside
        }
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    translate-address enabled
    translate-port enabled
}