How to fix full-width issue which occurs due to the Brizy plugin and Gutenberg?

To fix this issue install and activate this plugin: https://wordpress.org/plugins/classic-editor/

The issue with incorrect full-width appearance usually occurs due to the Brizy Page Builder. 

Do not use it, because it is not completely compatible with our native Unyson Page Builder. 

In order to fix full width for your page, please click WP Dashboard => Pages => All Pages => select necessary page and apply for page attributes full-width template:  http://prntscr.com/krmu7t 

Then update the page and check the result at the front-end.