Thank you for your reply.
I however am unable to see the problem you describe. Even at the page code you pasted, I see that the canonical URL is the same:
Where the canonical URL of the page is the same as the page
https://www.neakriti.gr/article/kriti/irakleio/1524790/eftase-stin-kriti-o-nikos-kotzias/
When you scroll down, the URL changes and if you "view code" of the updated page that was appended you see the new canonical URL.
Can you please explain me your findings as I am unable to replicate it?