This Page Builder calls the Visual Editor, and all extra buttons like the Contact Form one, in a modal:

Unfortunately, it doesn't quite work. You can't edit existing forms, and adding new forms sometimes fails to bring up the default form, and opens the form editor with no default fields at all.
<br />
<b>Notice</b>: Trying to get property of non-object in <b>/wp-content/plugins/jetpack/modules/contact-form/admin.php</b> on line <b>580</b><br />
<br />
<b>Warning</b>: Invalid argument supplied for foreach() in <b>/wp-content/plugins/jetpack/modules/contact-form/admin.php</b> on line <b>580</b><br />
<br />
<b>Fatal error</b>: Call to a member function get_attribute() on a non-object in <b>/wp-content/plugins/jetpack/modules/contact-form/admin.php</b> on line <b>584</b><br />
Suggested here:
https://wordpress.org/support/topic/cant-edit-contact-form?replies=6&view=all#post-7740352
This Page Builder calls the Visual Editor, and all extra buttons like the Contact Form one, in a modal:
Unfortunately, it doesn't quite work. You can't edit existing forms, and adding new forms sometimes fails to bring up the default form, and opens the form editor with no default fields at all.
Suggested here:
https://wordpress.org/support/topic/cant-edit-contact-form?replies=6&view=all#post-7740352