title: magento modules duplicated into include/src
body: <p>I've build a custom module at</p>
  
  <blockquote>
    <p>magentoRoot/app/code/local/CustomModule/Catalog/Model/Product.php</p>
  </blockquote>
  
  <p>that extends the "on save" event for products and categories. Everything worked fine until I've noticed that any update made to the file was not firing up any longer. After some debugging I found out that the file has been duplicated at</p>
  
  <blockquote>
    <p>magentoRoot/includes/src/CustomModule_Catalog_Model/Product.php</p>
  </blockquote>
  
  <p>It seems in this folder path</p>
  
  <blockquote>
    <p>magentoRoot/includes/src</p>
  </blockquote>
  
  <p>there are duplicated all other modules/extensions since there are like 7k files present.
  So at some point someone from the team (including me) has enabled a magento feature, or some extension has updated Magento's ways and I want to revert back. Anyone has ever encountered this issue or knows how to get rid of this?</p>
  
  <p>Note: I'm not the only one working on the project, so assume that I don't know the answer to: what have you installed/activated.</p>