Empty Columns/Bullets causing 'Unsupported Content' when the page is published

Issue Summary

In some pages, we are experiencing an "Unsupported Content" message in the published version. When editing it, the content can be shown

Environment

• Cloud
• New editing experience

Steps to reproduce:

1. Create a page in the new editing experience;
2. Add some bullets and let one of them empty OR insert some content and then add two Columns;
3. Fill only one of the columns;
4. Publish the page.

Expected Results

Get the content correctly showed in the published version

Actual Results

Unsupported Content message instead of the content

Notes

Internal bug created previously - https://jira.atlassian.com/browse/CONFCLOUD-66461

Workaround

In the editing mode, check the page out to find any empty layouts / bullets and insert some information on that, or delete the empty layouts / bullets.