Sliders in apps not visible
I have and app called SFXR that I use to make custom sound effects, I had recently discovered since the last iOS 8 patch, that the slider controls have completely disappeared, but they still function, just invisible, but, I found other apps just recently that that also have sliders, their names being substrate and pixels4every1, can anyone please help on how to make the slider controls visible again? I would very much appreciate any and all help