I added a contact form to my node (with paragraphs). On editing the node, the "Save"-Button for saving the node gets replaced by the attached contact-forms "Send message"-Button.
It has the same HTML-Markup (except the value), but it looses it's function and i can't save the node any more.
Attach the cores contact form with paragraphs to a node and the button gets replaced:
Change the admin-theme to Claro and the buttons are there:
Active
User interface