In the past, the “Events Renamed” pop-up has appeared before I’ve entered Play Mode, but today (twice so far) it has been popping up after entering play mode. It’s a modal pop-up – it won’t allow me to do anything until I’ve clicked one of the buttons. But since Unity eats the mouse cursor when its window is active, clicking one of the buttons is impossible. Also, the modal is unresponsive to keyboard input. I can’t press Tab to select a button or Enter or Spacebar to choose an option. So when this happens, the only option available to me (unless I’m missing something) is to right-click Unity in the Dock and select Force Quit. At that point, I have to return to the Unity Hub to reopen my project.