Particlescape was built with iOS SDK 5 back in 2011 and hasn’t required an update since I first deployed it, a fact that gives me just a little bit of pride. But now I’ve discovered that iOS 8.3 breaks the sliders – they become invisible. Thanks to the people who posted on this forum to bring the issue to my attention, and I’ve finally done some research and discovered that, indeed, iOS 8.3 broke UISliders across many apps, not just mine. (Google “UISlider iOS 8.3” for details.) The only solution is to recompile the app. I’m working on it! Coming soon: native resolution, more particles for newer devices!