My favourite example of this is bank app I use very often, which comes with a VERY annoying twist. The most used button (one-time payment code) sometimes switches with "Take a loan" button, and after clicking loan button, someone from bank will call you in a near future to talk about it.
The loan button was sending you to the screen with slider where you were able to choose amount of money to loan. So it wasn't causing you to take loan by accident, but just clicking it was noted somewhere as being interested in taking and loan, and caused bank to call to you about it.
