I would imagine you are experiencing a bug. I've been using 3.8 daily since its release (on a Pro plan in Canada). I believe this is true of many people.
What is your reason to believe this is not a bug specific to a small set of Pro users?
What is your reason to believe this is not a bug specific to a small set of Pro users?
My free gmail account is not.
Google just takes months to roll out their models to everyone.