When visiting wikitech.wikimedia.org, the following error is thrown in the console:
Failed to set referrer policy: The value 'Origin When Cross-Origin' is not one of 'always', 'default', 'never', 'no-referrer', 'no-referrer-when-downgrade', 'origin', 'origin-when-crossorigin', or 'unsafe-url'. This document's referrer policy has been left unchanged.
The reference in the code seems to be the line
<meta name="referrer" content="Origin When Cross-Origin" />
Well, this was in my backscroll
DarTar Krinkle, csteipp this is hilarious, apparently people were referring to the referrer/referer spelling DarTar two possible typos/inconsistent implementations within a single meta tag, wow Krinkle DarTar: Firefox and Chrome both support both. DarTar Krinkle: that’s awesome DarTar so we should probably go for the correctly spelled one, right? csteipp Krinkle DarTar: So let's use the new variant DarTar +1 Krinkle DarTar: Hm.. typo was the key instead? Not the value? Krinkle (I'm aware of the ancient referer typo) DarTar apparently, and yes the debate on the extra R made history