While on a website last night (Nest's tech site to be exact), I was presented with a half-screen of black where I was assuming I should be one of the roller screens. Only problem was; I couldn't differentiate the choices from the black background. I could click on things, but couldn't see what exactly I was clicking on. Didn't dawn on me till a few hours later to turn the app off & recheck it. Sure enough, it was visible now. Anyone else run into this yet? I honestly thought an app was having a major malfunction. Glad I figured it out finally.