Rendering diff does not display overridden images

Reproduction steps:

• Create a page with an attachment "foo.png" and a content:

  [[image:attach:foo.png]]
  

• Edit the page to remove the content and upload a new image named "foo.png" and change a bit the content so that it contains:

  New image:
  [[image:attach:foo.png]]
  

• Save the changes
• Open the history and compare both versions of the page with the rendered diff

Expected result:

• the rendered diff displays "New image:" added and displays that the old image has been replaced by the new one

Obtained result:

• the rendered diff only displays that a new line "New image:" has been added. No change on the image is displayed