GetDiscountPrices method does not return results if a Promotion code value is present

Hi,

I am using Commerce 12.15, I have a scenario where I want to see all the applicable promotions and I use GetDiscountPrices method.

var discountedPrice = ServiceLocator.Current.GetInstance<IPromotionEngine>().GetDiscountPrices(entry.ContentLink, currentMarket, new Currency("USD"));

I am facing an issue where the method returns a 0 count if the promotion has a promo code text. It returns the count correctly, if the promotion does have a promo code text.

Below are two example screen casts:

https://www.screencast.com/t/Ajh3g09f768d (Promotion code field is blank)

https://www.screencast.com/t/04auKGzADSl (Promotion code field is not blank)

I am expecting the GetDiscountPrices method to return all applicable promotions, and that doesnt seem to be the case if the promotion code field is not blank.