Annotations are not saved on one version when using Arender Blob diff

The annotations made from the Arender diff view are not saved on all versions

Step to reproduce

• Create a document
• Create a v1 with one image
• Create a v2 updating the main blob
• Trigger blob diff view
• Annotate on v1 from the blob diff view
• Annotate on v2 from the blob diff view
• Save
• Go back to the document
• Navigate to v1 and click on the Annotation tab => The annotation view doesn't display the annotations

Expected behavior

If I navigate to v1, I only see the annotation done on the v1 in the diff view, same from v2 of the document

Can be tested on https://arender.cloud.nuxeo.com/nuxeo/ui/#!/browse/default-domain/workspaces/Start%20Creating%20Your%20Cont/doc1.docx