Wordpress editor: "pick from existing tags" is gone?

Question

In the olden days of Wordpress, I could compose a new post and pick from existing tags using the "Tags" section in the right sidebar. With the current editor, that "Tags" section still lets me enter new tags - but "pick from existing" is gone.

Short of opening the list of existing tags in a new window (/wp-admin/edit-tags.php?taxonomy=post_tag), how do I get this useful functionality back?