Google has added a section to the use rel=canonical link annotations section of the canonical search documentation to clarify that rel=canonical annotations with certain attributes are not used for canonicalization.

Google explained that “annotations with hreflang, lang, media, and type attributes are not used for canonicalization.”

Google added this section:

Previously it only said, “Google supports rel canonical link annotations as described in RFC 6596.”

So go check your canonical annotations if you are not sure…

Forum discussion at X.