Nope.
I had (past tense) Fox ESR 52.2.0 portable as a back up browser, late last night I changed it to
Primary browser.
Posts to this Mozillazine forum have crossed over in the past 24 hours, I assume the Palemoon vs Firefox ESR 52.2.0 confusion is the result of the change of Primary browser ...!
SEE my thread in ...
Firefox Support Forum - ESR 52.2.0 Google cookies
When I reinstall Fox ESR 52.2.0 and reinstate all my classic Addons my question still stand
"How do I delete-remove the immovable Google cookies from ESR 52.2.0 ? "
Thank you