Extra semicolon error after Use Strict Directive

[LucaFranceschini]

Standard warns about correct use of semicolon after Use Strict Directive at the script-level:

'use strict';

1:13: Extra semicolon.

However, the semicolon is not only correct but mandatory: https://tc39.github.io/ecma262/#directive-prologue.

Can't find much about this. What am I missing?

[dougwilson]

From your link:

The semicolon may appear explicitly or may be inserted by automatic semicolon insertion.

[LucaFranceschini]

Oh, that's definitely something I was missing, thanks.
(funny, I often see the semicolon version even in examples using a no-semicolon style...)