Product customization - delete from cart issue

[getdatakick]

When cart contains several versions of customizable product, then deletion of one version from the cart can deletes other versions as well

Reprosteps:

1. Create a product with one file field and a text field
2. in the store go to that product, upload a file, write something and press Save.
3. Add the product
4. Keep buying, and then buy the same product, but without any custom field.
5. go to checkout and try to delete the last item.

Expected result:

The cart should contain product with customization

Actual result

The whole cart becomes empty.

[wartinw]

I was trying to see why happen this bug. I believe it has something to do with:

   protected function processDeleteProductInCart()
    {
        if(isset($this->id_customization)){  
        $customizationProduct = Db::getInstance(_PS_USE_SQL_SLAVE_)->executeS(
            (new DbQuery())
                ->select('*')
                ->from('customization')
                ->where('`id_cart` = '.(int) $this->context->cart->id)
                ->where('`id_product` = '.(int) $this->id_product)
                ->where('`id_customization` = '.(int) $this->customization_id)
        );  

Because if there is one entry of that same product with customization but you want to delete the customization-less one it returns one row.

But couldn't fix it :(