I have an app that runs perfectly on iOS 6. I\'ve set a blinking effect to a UISlider\'s thumb this way:
-(void)startBlinkingSlider{ isSliderBlinking = Y
So far in Xcode 6.2, iOS 8.2 the problem is still there, and the workaround still works. Swift version:
slider.setThumbImage(slider.thumbImageForState(.Normal), forState:.Normal)