Google NOT following the spec is not surprising. SHOULD does not mean MUST and they are completely in the wrong here.

The definition of SHOULD is "This word, or the adjective "RECOMMENDED", mean that there may exist valid reasons in particular circumstances to ignore a particular item, but the full implications must be understood and carefully weighed before choosing a different course."

I suspect viva.com didn't consider the full implications, and I suspect Google did some hard math on hours saved for their customers