Self Added Page breaks

Hello everyone, I would likw ro share a problem with you that i am struggling with.

While working on my company web page, the interface started freezing which is normal considering the complexity of the site. Wheb frozen i force reload to page to continue where i left. When the page loadded again two new page breaks was added which is somethinbg i did not want.

Is there a way to reverse this process?

Thank you in advance.