with my resolution on the lowest setting, i used a warp scroll while fighting ...running away from... a demigod. the target demigods portrait was still up in the middle of the top of the screen, when trying to stock up on potions the portrait was impeeding me from buying the cheapest health potion. i couldnt purchase the potion while the targets portrait was up and blocking the potion icon.
Yeah, this one is well known and occurs whenever you run away without your last target dying. I think they've already said it'll be fixed for the next update.