I must admit, I never knew that such a thing as the Web Editor Style Tool exists, still it is part even of the Ff ESR version and as the news tells us, it is an unsecure entry point for hackers, and given the number of entries it has (60 to 80?) in about:config, it is probably one of the things that clutters up cache. Is there a safe way to delete as much of that stuff from about:config as possible? Can I simply de-activate all entries?