ID tag not saving in author bio

I’m trying to make a link on a post jump to the author’s bio, as described here: https://en.support.wordpress.com/splitting-content/page-jumps/

But when I try to set a link in the author’s bio, it doesn’t save the id-tag.

Basically I want a good way to give my bloggers more prominence, but I was trying to do it in this way.