specific prices not refreshing (but ok in quick info page)

[vighatt]

Hi

ps v. 1.7.6.1.

When I set specific prices e.g. hummingbird printed sweater -> 40%
On the front page it's still 20 % (the demo setting)
Clicking quick view or product page ->  the price is ok (-40%)

tried it even on demo.prestashop.com, and it's the same
(clearing cache solves it...)