I'm having a problem with one of my sites in the Search Console: internal links are shown as external ones. At "Links to Your Site" "Who links the most" Google show me 8,891,136 links - internal links which are treaten as external ones. All of my 5 navigation links at the top are treated as external links. These links are of the type "/example/". All links within the content ("/some-other-page.html") are handled correctly.
My website is more than ten years old and I didn't had any problems in the past. The site is on a subdomain. The site is accessible via https but is having a canonical tag with http. I'm using Cloudflare since 1 year.
Anyone else who have seen this or having an idea?
(As long as Search Console is having a problem it's fine. However, I fear that these links are treated as external links in the ranking algorithm.)