User Macro with TinyURL do not render in PDF/Word export

Steps to reproduce:

1. Go to Browse > Confluence admin > User Macro
2. Create a User Macro
3. On the template field, add the following code:

   ## Macro title: My Macro
   ## Macro has a body: Y or N
   ## Body processing: Selected body processing option
   ## Output: Selected output option
   ##
   ## Developed by: My Name
   ## Date created: dd/mm/yyyy
   ## Installed by: My Name
   
   ## This is an example macro
   ## @param Name:title=Name|type=string|required=true|desc=Your name
   ## @param Colour:title=Favourite 
   #set ($helper = $action.helper)
   <div style="padding:10px;border:1px #114411 solid;background;background:#FFF0DF;"><p style="margin-top:0;"><strong>GOOGLE</strong><br /> View Online: <a href="http://google.com/x/$helper.tinyUrl">http://google.com/x/$helper.tinyUrl</a></p>$body</div>
   

4. Save it
5. Now in a new page, type {name_macro, that should auto-populate.
6. Save it, then go to Tools > Export to PDF
7. You should get this string in the PDF: http://google.com/x/$helper.tinyUrl

Workaround:

You can do that manually, avoiding the User Macro.