Issue Summary

This is reproducible on Data Center: yes

Steps to Reproduce

1. Add Panel Macro on a Page.
2. Enter the macro and press Enter several times
3. Publish/Update the page.

We can also reproduce it by copy pasting older pages that generated empty paragraphs with "auto-cursor-target" class

Expected Results

The panel should display all of the empty linesActual Results

The panel hides the lines

Actual Results

The rendered preview page has an empty panel rendered

Observation

When pressing enter in a panel/table - tiny mce will copy the previous empty paragraph with all of it's styling/css - this is useful to maintain consistent style.

On server side - we filter out a paragraph that is empty and has auto-cursor-target css class.

Also worth pointing out that TinyMCE has a special behaviour if you add a tabla - it prevents you from deleting th eline added after the inner table

Workaround

select panel content and format is as paragraph