Issue Summary

Adding Fabric Page Tree Macro without editing parameters results in error message being published instead

Environment

Fabric Pages

Steps to Reproduce

1. Open a Fabric Page
2. Add a Page Tree Macro (but don't click the Edit/pencil Icon)

Expected Results

Macro shows default values.

Actual Results

An error panel with "Unsupported content is shown instead"

Notes

• When adding the Page Tree macro on the page and publishing it, the HTML code of this page doesn't have the <p> content </p> tag:

  <ac:structured-macro ac:name="pagetree" ac:schema-version="1" data-layout="default" ac:macro-id="659c31b4-fc50-406b-ae39-70d3cff69c31" />

• It could be related to this bug: CONFCLOUD-66356: Pages missing <p> tag becomes unresponsive - however, adding the missing tags through the database doesn't fix the issue here;
• It is not reproducible on all instances.

Workaround

Add the the Page Tree Macro
Edit the macro and save
Make sure the preview loads before publishing