The Web Proxy Auto Discovery app is not working well for me at all. I am running ClearOS release 7.2.0 (Final).
When I edit the settings, I get a spinning "loading" icon in my browser tab - sometimes it spins forever, other times it comes back with an error that a file is missing. If I change the WPAD service to disabled, it always seems to stay enabled. Sometimes settings won't stick unless I uninstall and reinstall the app. It creates a DNS entry for my external interface which I don't think is correct - I am not configuring it to use my external interface.