Please fill in this template when reporting a bug, unless you know what you
are doing.
Description of Problem:
When I reschedule a half-hour appointment in my calendar to a new day, the
time is expanded to 1 hour.

Steps to reproduce the problem:
1. Make a new appointment for a half-hour
2. Open the appointment
3. Change the date by changing the "Start Time"
4. Save and close
5. Switch to that day in the month view
6. You should see the appointment now takes 1 hour

Actual Results:
A 1 hour long appointment

Expected Results:
A half hour long appointment

How often does this happen? 
Always

Additional Information: