Download attachment from Office Excel macro failed in Edit mode

First Symptom

When downloading an attachment from Office Excel Macro inside the Edit mode, it direct to "Page Not Found"

Steps to replicate

• Install a new confluence 5.9.4
• Create a page with Excel attachment, and insert a Office Excel Macro
• Save the page
  
• Edit the page again
• Click on the Office Excel marco, download
  

Expected Behavior

The attachment downloaded without problem

Actual Behavior
It redirected to "Page Not Found"