Error in updating data in product.tpl

[fibo]

Hi!

I've noted an issue in Prestashop 1.6.1.14.

I've created a rule so that, purchasing a quantity of 3 items, you got a discount of 10%.
The problem is in the product page, because when you increase the quantity and you reach the quantity that grants you the discount, the price is updated to 0€.
 

<p id="reduction_percent" {if $productPriceWithoutReduction <= 0 || !$product->specificPrice || $product >specificPrice.reduction_type != 'percentage'} style="display:none;"{/if}>
  {strip}
   <span id="reduction_percent_display">
     {if $product->specificPrice && $product->specificPrice.reduction_type == 'percentage'}-
     {$product->specificPrice.reduction*100}%{/if}
   </span>
  {/strip}
</p>

It seems to me that the code that control the update of data in product.tpl is correct.

Any advice of what I can try?

Thanks

[fibo]

I've updated to 1.6.1.18.
It sounds strange but it has the same issues.

Somebody has ideas on what to try?