Firefox keeps everything signed in, except for Google services

On a previous install, this was a non issue. I recently had to reinstall windows entirely, and went to download Firefox first thing, but have been having an issue where even though every setting to delete cookies is off, I have the "enhanced tracking protection" set to custom, with everything ticked off, there are no extensions, no anything to seemingly cause the issue. I even signed out of my Mozilla account just to see if it was a sync issue. It still occurs. Firefox has been keeping me signed into literally everything, except specifically Google services. YouTube, Gmail, photos, everything. Any fix?