The orphaned pages panel does not scale

Steps to reproduce :

• Launch a clean 11.10.5 instance
• Create 100 000 pages without parent … here's a script to do it with the help of the job macro :

  {{job id="{{velocity}}$doc.fullName{{/velocity}}" start="true"}}
  {{groovy}}
    def logger = services.logging.getLogger(doc.getFullName());
  
    for (int i=0;i<100000;i++) {
      if (i % 100 == 0) {
        logger.warn("Working on document ${i}")
      }
      def document = xwiki.getDocument("Main.${i}");
      document.save();
    }
  {{/groovy}}
  {{/job}}
  

• Now, if you already added the orphean pgaes pages panel in the ui of the wiki, your wiki should be pretty much unusable. However, this is usually not the case : the panel is deprecated since we don't use the notion of "parent" anymore, and it's not visible in the default ui of the wiki
• Go in the wiki administration, in the panels section
• In this page, every panel gets rendered, including the orphean pages panel, which will take a large amount of time and will slow the rendering of the page.