Product without reduction on price drop page

[JamesBen08]

Hello ,

I don't know why , but in my price drop page , i have product with reduction and without reduction that apprear .

I checked  data base , in ps_specific_price and everithyng appear to be ok

I even delete the ps_specific_price and style product without reduction appear .

On ps_product all products have the "on_sale" colonne to 0

the same for the price-drop.tpl file nothing to explain this result

Any idea why this is happening ?

Thanks in advance

Prestashop 1.6.1.5

Edited February 20, 2019 by JamesBen08 (see edit history)