Hi Erik,
Checked that option means the editor does not save the <p>
tag that automatically applies when you hit enter to break the line. See on the documentation https://docs.metabox.io/fields/wysiwyg/#settings
If you want to save data in raw format, e.g. exactly the same as you enter in the editor without applying wpautop() function. Can be true or false (default). Optional.
So please uncheck the option Save data in the raw format
to save the <p>
tag.