Issue Summary

A Connect app that has a PDF export renderMode that takes more than a few seconds to export data will show as blank in the PDF export.

Steps to Reproduce

1. In a Connect macro atlassian-connect.json have

           "renderModes": {
             "default": {
               "url": "/pdf-macro?pageId={page.id}&spaceId={space.id}"
             },
             "pdf": {
               "url": "/pdf-macro?pageId={page.id}&spaceId={space.id}"
             }
   

1. In the PDF render, have a delay of 5 seconds before it returns the data
2. Add the macro to a page with minimal content.
3. Export the page to PDF.

Expected Results

The macro renders correctly
working.pdf

Actual Results

The macro doesn't load all of the data so the macro doesn't load properly.
broken.pdf

Workaround

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