User interface elements that move around. Dear FSM, I can't tell you how many times I've started to click/tap some element on the screen only to find that by th

User interface elements that move around. Dear FSM, I can't tell you how many times I've started to click/tap some element on the screen only to find that by the time I completed the movement of my mouse/finger, the "thing" I was trying to click was in a different place and I wound up clicking something else. F%#@ng Youtube gets me with this all the time when watching videos in a playlist. The next video starts, and go to click the pause button, and by the time I click, where the pause button was, is now the back button.