Referencing path alias and path to said file from different modules causes anonymous define function to run twice :/

I Let Requirejs Bust my Singleton ??

// create path for class.js
require.config({
   paths: {
      vvImptSingleton: 'path/to/veryImptSingleton'
   }
});


// file: path/to/veryImptSingleton
// srsly important self-serious singleton
define(function (){

  var VeryVeryImportantSingleton = function(){ ... }
  VeryVeryImportantSingleton.prototype = {
     //...shared methods
  }

  console.log('outside!')

   //IIF closure over instance variable 
   return function() {
       
       var instance = null;
       
       return function(){
          
          console.log('inside!', instance);
          
          if (instance === null) {
             instance = new VeryVeryImportantSingleton();
          }
          return instance
       }
     }();
});


define(function(){
    var singleton = require('vvImptSingleton');
    singleton();
    // console logs:
    // outside!
    // inside! null
});


define(function(){
    var singleton = require('path/to/very-very-impt-singleton');
    singleton();
    // console logs:
    // outside!
    // inside! null
});


// :/ wtf i am referencing the same file but it's executing 
// the anonymous define function twice

// the obvious fix is to either reference path to file or the path alias
// but still should this be behavior? i couldn't see it in the documentation,
// but if it isn't there, should people know about this?