Issue Summary

Disabling companion app plugin submodules causes corruption of   pdfview macro preview

Environment

Confluence 6.15.1, postgres 9.5, all supported browsers

Steps to Reproduce

1. Create new page
2. Add pdf attachment and insert it into PDFview macro
3. Go to Confluence administration -> manage apps. Search for Confluence plugin "Confluence Previews"
   Disable plugin submodules (according to official documentation https://confluence.atlassian.com/doc/administering-the-atlassian-companion-app-958456281.html ):
   1. Edit With plugin for the Media Viewer (companion-plugin)
   2. Embedded 'Edit With' button (embedded-edit)
4. Go to previously created page

Expected Results

Pdfview macro is rendered

Actual Results

Pdfmacro preview is corrupted:

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available