Galaxy S6 display issue

@Developers, I just got the galaxy s6 and noticed quite a few times that black squares appear during play over top of different things. They appear where it looks like images should be like on top of a card in my team. over the coins remaining, over which stage i'm on, over how many chests I have gotten, the background image behind the bosses i'm fighting. I see this a lot during the sea dragons battles. It might be because I auto spin a lot on sea dragons and the graphics don't keep up. I'm not sure if this is something you can fix or not but I thought you should know.
Thanks
Thanks