This is a relatively minor issue but when you get an error message because e.g., you entered your PIN incorrectly or because Waggle isn't working - it shows up in a large white pop-up screen with a big 'X' inside a red hexagon. So your intuition (or at least mine) is to click on the 'X' to dismiss the message. But you actually have to click in the small area outside the white pop-up to dismiss the message which seems very strange.
From reddit:
Been meaning to address this across the app.