Hello Zhanna,
I have the same problem. I’ve made a web in vantange theme. I’ve modified footer by creating a vantage child and a new footer.php.
It works perfect… but in the blog page the footer appears on the header place…
If I erase my footer.php, then the blog page appears fine (but not as in the demo).
I have disabled all my plugins but the problem remains.
Could you please check it?
Thank-you very much.
Climent