Summary

Upgrade Confluence with the incompatible numbered headings add-on causes most of Confluence macros configuration form stuck in an infinitive loading loop.

Environment

• Upgrade to Confluence 7.x
• Incompatible Numbered Headings app

Diagnosis

• There is nothing in the confluence application log. 
• HAR file shows 200 OK.

• In the Browser console log, "TypeError: AJS.clone is not a function" error appears: 

  console log

  Uncaught TypeError: AJS.clone is not a function
      at Object.AJS.MacroBrowser.ParameterFields.enum (batch.js?frontend.editor.v4=true&gatekeeper-ui-v2=true&healthcheck-resources=true&hostenabled=true&locale=en-GB&user-logged-in=true:11385)
      at v (batch.js?frontend.editor.v4=true&gatekeeper-ui-v2=true&healthcheck-resources=true&hostenabled=true&locale=en-GB&user-logged-in=true:1651)
      at Object.<anonymous> (batch.js?frontend.editor.v4=true&gatekeeper-ui-v2=true&healthcheck-resources=true&hostenabled=true&locale=en-GB&user-logged-in=true:1656)
      at Function.each (batch.js?locale=en-GB:33)
      at c.fn.init.each (batch.js?locale=en-GB:29)
      at Object.loadMacroInBrowser (batch.js?frontend.editor.v4=true&gatekeeper-ui-v2=true&healthcheck-resources=true&hostenabled=true&locale=en-GB&user-logged-in=true:1656)
      at Object.successCallback [as success] (batch.js?frontend.editor.v4=true&gatekeeper-ui-v2=true&healthcheck-resources=true&hostenabled=true&locale=en-GB&user-logged-in=true:1701)
      at c (batch.js?locale=en-GB:44)
      at Object.fireWith [as resolveWith] (batch.js?locale=en-GB:44)
      at u (batch.js?locale=en-GB:44)

  

Solution

• Disable the Numbered Headings app or upgrade to the compatible version.