When a time is changed to a different day, the update is not shown at first

[msiep]

Steps to reproduce:

1. Long press on a task and select "Show Times"
2. Long press on a time and select "Edit Time"
3. Change the date for both start and end time (e.g. to one day earlier than it was)
4. Select OK
5. Observe that your change is not yet shown in the Task Times (this is the bug)
6. Go back to the list of tasks
7. Long press on a task and select "Show Times"
8. Observe that your change is now correctly shown in the Task Times