hard to write code on enfold text-block element

i remember it was as easy as here in the blog to write code in text-block element.

But with new Enfold – i only can use in visual mode the preformated option
and on text mode the code tag. But this does not work correct.

See here: https://webers-testseite.de/breadcrumb-under-sliders/

this is only possible because i copy pasted it from board.
when i want to edit that text-block the code totaly messes up
On text view there will be added more code and pre tags again and again on each edit