I have a scrollable text field where the text changes programmatically. when I scroll up to see the end of the text, I can keep scrolling so that all of the text scrolls out of site (this is bad). I should only be able to scroll up until I reach the end of the text. Even worse, something in the scrolling goes into an infinite loop, and the app starts use up memory until I have to kill it. I assume that it is something that is set wrong in Main.storyboard, but I am not sure. Andy ideas?