Kanban Board/Backlog not displaying in Confluence's iFrame macro

Summary

Previously, when the user inserted an iFrame macro to display a Kanban Board/Backlog from a Jira Software Project, the same would display the issues and requests. By now, if inserting it, it only displays the Jira sidebar, allowing the user to see/interact with other options.

Steps to Reproduce

1. In Confluence, create/edit a page
2. Tap the Insert button > Other Macros > Then, select the iFrame macro
3. Insert a board from a Jira software project (URL should be something like 'https://example.atlassian.net/secure/RapidBoard.jspa?rapidView=23')
4. Save the macro configuration and publish the page

Expected Results

The iFrame should render all the content from the Jira board, including the issues.

Actual Results

Only the sidebar is displayed, as the example below:

Notes

The following errors are displayed in the console when trying to view the iFrame's content:

Uncaught TypeError: Cannot read property 'setNewIssueViewEnabled' of undefined
    at HTMLDocument.GH.RapidBoard.init (batch.js?adg3Enabled=true&agile_global_admin_condition=true&devsummary=true&globalSidebarEnabled=true&jag=true&jaguser=true&jira-nps-enabled=true&locale=en-US&nps-not-opted-out=true&sd_operational=true:5356)
    at j (batch.js?adg3Enabled=true&locale=en-US:76)
    at Object.fireWith (batch.js?adg3Enabled=true&locale=en-US:77)
    at Function.ready (batch.js?adg3Enabled=true&locale=en-US:65)
    at HTMLDocument.Q (batch.js?adg3Enabled=true&locale=en-US:75)

And

Uncaught (in promise) Unable to load bridge "internal/browser-metrics"
Promise.then (async)
(anonymous) @ index.js:53

Workaround

There is no workaround at the moment.