Strange work of the advanced layout editor

Hi
Sttange thing i have kast few days, example.
picture 1: i want to add a phone fiels to the contact form

Picture 2: after adding i have 1 duplicate field e-mail!!

i press save and open again for modification and see next:

And this happends not only with this field, with blocks too.

And how can i remove classic editor code before layout builder?

• This topic was modified 5 years, 10 months ago by KidLoop.