Corporations not obey trade strategies?

Has anyone else noticed an issue where you specify trade strategies and your corporations just seem to ignore them? I have specified a sales strategy of +160% of price after quality and to decrease the price by 10% if not sold and every month my corporations begin by saying they have sales 'Some Left'.

When I click to see how much product is left I see under "Products Offered on the Market and not Sold yet" that products are being sold for 'Best Price'.

Yes I have noticed this. I periodically have to keep setting my corporate settings. And I check them as they seem to change once per week.