Steps to reproduce:
1. Get the "Link to file" of a community file
2. Put that file into an email
3. Open that file with Mail Verse
4. Open the file and verify if customizer modifications or visual update (aka Periscope) are loaded which will not be the case
Upon further investigation, the scenario is occurring because Verse has a click handler that intercepts the request for the file and renders the file viewer, without triggering a network request to /communities/. Thus the request is not going through the mw-proxy. In iNotes, a new page is open to the community and then the viewer is invoked by which time the customization is loaded.
We request the behavior of Verse and ICEC to be changed to address the scenario described above.