Cannot save or edit product, page just refreshes

[dfordress]

Hi, recently I have started to face a problem in prestashop. The version I am using is 1.6.1.6. When I edit any product or  add new product, the page doesn't save anything and it is just refreshing and reset everything I write in prduct descriptions or price. It is irritating product as it takes me half hour to add one product. It works sometime and then again it stop working. I have to retry many times to edit a single thing in a product.

 

Any help is appreciated.

[NemoPS]

Known bug, upgrading to the latest 1.6 should fix it. If not, try this, it's a manual one: https://github.com/PrestaShop/PrestaShop/pull/6749/files