Hi!
I found a solution for myself, maybe it is works only for me.
I am using a template by templatemonster.
My problem was, templatemonster theme added a class to the div id content, named two_third. This class has the following width propertiy: 65.33%
Ok, so what i need only, to add this class for woocommerce.
So i did navigate to file: wrapper-tart.php, and add this class to div with id=”content”. And viola, my page is works now.
Anyway, if you know the with of your sidebar, you can easily set up a new selector for your content, and just insert your class into this {WOOCOMMERCEDIR}templates/shop/wrapper-start.php