Author here: I can't reproduce it any longer either, seems they have pushed a server-side fix out for this issue

That makes sense. (I suggest updating the article.)

Yup, just did. Thanks for the tip

This "fix" sounds like removing the alert only, not fixing the issue, right?

So this is simply hiding the embarrassing symptom.

FWIW I encountered it yesterday while signing in to Google Maps.

It’s iOS only