When I enter content in posts/pages' WYSIWYG editor, I do not get <p>
when ending paragraphs, just  
s. If I manually place <p></p>
in the HTML mode, they are stripped as soon as I switch to 'visual' mode.
This is repeated in several sites (I thought it was the theme but it isn't).
I have read dozens of topics and answers, but none solve my problem.
I tried add/remove wpautop
in my functions.php file but nothing helps.
I do not want to use a tinymce plugin.