“Edit.php” problem after moving “index.php” into subfolder

I moved my index.php file into a subfoilder in order to create a static front page for my website.
Everything is working well less that “Previous posts” in the admin panel into the Manage > Posts section. It is giving me an error that page is not find at the address https://mysite.com/blog/wp-admin/edit.php.

But it should go to https://mysite.com/wp-admin/edit.php.

What I have to do in order to fix it?
Thanks in advance.

Cheers.
Cristian