I just received an email from Google Search Console with a subject 'New requirements for SharedArrayBuffers on (website...)'.
Its message is like this:
"Google systems have recently detected that SharedArrayBuffers (SABs) are used on (website), but COOP and/or COEP headers are not served.
For Web Compatibility reasons Chrome is planning to require COOP/COEP for the use of SABs from Chrome 91 (2021-05-25) onwards. Please implement 'cross-origin-isolated' behavior on your site."
Is this a criticial issue to fix?
