It seems to be restricted to "PvP" areas which is bonkers seeing warden towers are all PvE. Anyway I've voiced my distaste for this change because I've not done beta and fear there will lots of little "PvP" nodes where PvE happens, follow breaks and we're annoyed every step of the way.
I don't know why "PvP" mobs are now a thing but it really sucks for us with this new rule. I guess we're going to find out how annoying it is.