iOS - Bug HUD goes blank intermittently when spinning Big Wheel and making billion shot

[Thnikkaman]

I was playing BoP for the first time in a while last night, and I noticed some odd behavior in the HUD -- whenever I spun the big wheel, the display would go blank when the wheel stopped, and I couldn't see what prize I got. Also, when I made the billion shot, the HUD became a bit garbled and then blanked out until the billionaire's club fanfare stopped. This was on an iPad Mini with iOS 6.1.3.