Sharing a subpage with its own title

I orgnize my docs using subpages. However I realized that when I share a subpage by pasting link, the “Card” would only show title and other metadata from the top level doc.

For example if when I paste the link in my doc, it shows title as “Home” instead of my expectation “Bulid personal website with Coda”.

This makes subpages confusing when it comes to sharing with ppl.