It looks like you removed the frontend CSS file of HikaShop in the Display tab of the HikaShop configuration. Without it, you don't get the CSS code which fixes that problem:
.row-fluid .hikashop_product_column_1, .row-fluid .hikashop_category_column_1,
.row-fluid-7 .hikashop_product_column_1, .row-fluid-7 .hikashop_category_column_1,
.row-fluid-8 .hikashop_product_column_1, .row-fluid-8 .hikashop_category_column_1,
.row-fluid-10 .hikashop_product_column_1, .row-fluid-10 .hikashop_category_column_1 {
margin-left: 0 !important;
clear:left;
}
So either re enable the HikaShop CSS or add that CSS to your template CSS and it will display fine.