Bug in 3.3.1

HI,

single-product.php is not calling content-single-product.php
when is try to remove sidebar by commenting get_sidebar on single-product.php it don’t remove from single product page. Even is commented wc_get_template_part( ‘content’, ‘single-product’ ); even then I got single product page. How is this possible.

Then I comment get_sidebar in single.php of wordpress, you know what happens sidebar disappeared from single product page.

It means content-single-product.php called through wordpress’s single.php, how is this possible to get content of single product page through wordpress’s single.php.

Is it a Bug?