Corruption of stock live wallpaper

[MrGimper]

Just been playing with the live wallpapers and noticed a corruption in the final frame of the blue/gold fish animation. Faint horizontal grey lines behind the time and date. Thought my screen had gone bad but it shows in the screenshot so must be part of the graphic. Bizarre. I'm running 9.1 b2 on 6s Plus

 

[Cryates]

Weird. I tried to recreate it on mine and don't see anything like that. You're clock also doesn't look true black like mine does.