Hello,
Thank you so much for getting in touch.
This is normal and a core feature of WordPress. You should not use the <!--more-->
link if you don’t want that appended to the URLs.
However, Rank Math adds canonical tags so there is no negative effect as far as SEO is concerned.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Hello,
Thank you for contacting Rank Math support.
It sounds like you have added your button as a link and therefore when you click it loads the read more section id to the permalink. This is not an issue to be worried about unless it adds this to the canonical URL too. You can check this by checking your page source: https://i.rankmath.com/gKkzGl. Let us know if this helps.
Looking forward to helping you. Thank you.
Hello,
We are glad this issue is already resolved.
If you have any concerns, please don’t hesitate to contact us anytime by creating a new ticket to assist you further with anything else.
Thank you.