I have a webfilter profile setup for my internal LAN. This profile uses a policy (time based) to be less restrictive in the evening hours.
When I have the Sophos Endpoint installed and webcontrol is configured, the resulting policy always seems te revert back to the base policy.
As soon as I put the endpoint in an endpoint group with webcontrol disabled the less restrictive policy is working again (after a short time).
I am using the web filtering with transparent proxy and no authentication.