When date picker is open it periodically reverts to the date from the pop-up

[jikamens]

Reported by an end user via email:

1. Open the scheduling pop-up.
2. Click the calendar button to open the date pop-up.
3. Move the calendar in the date pop-up forward a month.
4. Wait a few seconds and notice that it reverts to the month that's in the date currently in the date field.

I suspect that we are periodically refreshing the contents of the calendar field even when it hasn't changed and that's what's causing this behavior. More investigation is needed.