No blog posts shown when permalink is on "postname"

Hey,

Since I updated WP to 4.3 my blog page says: “sorry, no posts match that criteria.”
It only happens when the permalink is set to %postname%. When I change it to default (ex. ?p=22) it works fine and shows all my blogpost.

I never had problems with it before 4.3. I deleted my .htaccess-file as read on the internet but it doesn’t help.

All my other pages works fine, it’s just the blog page.

Can someone help me?