woocommerce product by ID does not show 10 product in two column

Hi,

Please look at the website url. on home page i use woocommerce product by id module with 2 column.
On there if i choose 9 to 16 product it show only 9 product not 10 but if i choose more than 17 product then it show 10 product. that means number 10th product is missing.
please check this how i can fix it perfectly.

Thanks