I’ve found some more Google weirdness … this time related to how it handles declared ‘canonical’ URL’s.
A canonical URL is a meta tag that you put in a web page that says “This is the correct URL to this particular page”.
Here’s an example of the canonical tag …
<head> <link rel="canonical" href="https://example.com/page.php" /> </head>
However, even when you declare a canonical URL, Google sometimes decides that there is a better URL.
In some cases it’s to another page on your site…
In this case, both pages are pretty similar (actually, they are identical) … but they are two distinct pages and both have their own canonical URL declared.
I noticed at least one case where the canonical URL that Google selected wasn’t even on my site.
Granted, this is the same content … but it’s should not be considered the canonical version of a page on my site.
Unfortunately I really don’t know how to resolve this issue … as Google doesn’t respond to webmaster raised issues related to their search engine functionality.