ExecuteOrDelayUntilScriptLoaded not executing

Question

ExecuteOrDelayUntilScriptLoaded not executing after page publish

In SharePoint 2013 I have a page that is using the Script Editor web part. In the script editor web part I have the following:

ExecuteOrDelayUntilScriptLoaded(functionCall, "sp.js");

function functionCall() { alert('Hi'); }

How come the alert is called when the page is unpublished, but once I publish the page then ExecuteOrDelayUntilScriptLoaded() is not firing.