We all have this kind of editor who love line break to add space between paragraph, you can add this small TS snipped to remove all the empty paragraphes:
prototype(TYPO3.Neos.NodeTypes:Text) {
text.@process.cleanup = ${node.context.workspace.name == 'live' ? String.pregReplace(value, '#<p>(\s| |</?\s?br\s?/?>)*</?p>#', '') : value}
}