We recently updated the way you select a patient when creating a new appointment. We had some very helpful feedback from Andrea at http://www.gretchen.com.au/.
The previous change made it take longer to select another patient if you chose the wrong one first.
We've now tweaked this control so that when you go back and click on it again, it will keep your last "search term" in there, so you can just edit it slightly.
Thanks for the feedback!