Unable to load the macro preview of Jira gadgets in new pages

Summary

When creating a new page with the new editor experience, the macro preview is shown as blank so user can't add details(e.g. select Jira projects, filters) to add Jira gadgets.

Steps to Reproduce

1. Create a new page using the new editor
2. Try to insert a Jira gadget (e.g Jira Issue Calendar, Jira Roadmap, Issue Statistics and Issues in progress) into the page

Expected Results

In the macro edit window, user is able to choose Jira projects and filters

Actual Results

The macro preview is shown as blank and user can't choose Jira projects or filters

Notes

• This happens both regardless of the page status(draft/publish) or how the macro was added("/", Insert menu)
• This does not happen with the Legacy Editor
• Confirmed macros that don't work:
  • Pie Chart
  • Version Report
  • Voted Issues
  • Watched Issues
  • Jira Issues Calendar
  • Jira Road Map
  • Issue Statistics
  • Issues in progress
  • Created vs. Resolved Chart
  • Sprint Burndown Gadget
  • Average Age Chart
  • Average Time in Status
  • Average Number of Times in Status
  • Filter Results

Workaround

Currently, there's no workaround found for this issue.