I didn't catch this the first time since I didn't try an actual update yesterday, but I realized that the intention here is that if you do an update, we just close the dialog and change the message in the main listing. I wonder if it would be clearer if we actually showed a message here indicating that the update will happen on quit (and hide the "install" button so the user just closes the dialog at this point). Otherwise it might be a little confusing, since in all the other cases this dialog doesn't go away until the installation has finished or been cancelled.