my wordpress automatically adds draft post of previous post with html content

Hi! I need help, why is my wordpress automatically creates a draft post of some of my previous posts which has html/css contents. And also when I click my original published post it shows “Nothing Found” on post page.

But if I delete the draft post which was automatically created by wordpress my Post returns back to normal.

I can’t find other topics of this problem, am I the only to experience this xD Please help!