Our rel=canonical code seams to be implemented incorrectly.
No rel=canonical on https://en.wikipedia.org/wiki/Redirection
But a rel=canonical on https://en.wikipedia.org/w/index.php?title=Redirection&redirect=no
rel=canonical is supposed to canonicalize https://en.wikipedia.org/wiki/Redirection to the page it points to https://en.wikipedia.org/wiki/Redirect
The rel=canonical on the redirect=no is rubbish, the content displayed at that url is not the article and hence the canonical version is NOT the article being redirected to.
Version: unspecified
Severity: normal