Diagramly macro links on diagram entities get broken after name(title) of page changes. It doesn't follow current confluence link nature where link is referenced by page id instead of page name.
Impact: When two different people, one works on diagrams and the another works on pages that are linked together through the link entity feature then the person who is going to rename the page is not familliar (is also unable to discover) of any dependencies and these links get broken.