Empty HTML Macro Cannot Be Added to

Problem

Solution

This is a known issue with the "v1" Atlassian Confluence page editor

  1. This does not happen with the "new" (a.k.a. "fabric") Atlassian Confluence page editor
  2. Delete the empty HTML Macro and add another one in its place.  Add code/content to the body of the macro before you publish the page using the v1 page editor.