After setting the minimum value of a timefield via the setMinValue function, that field's time data shrinks to a non-scrolling size. After selecting one of those values, lowering the timefield's minValue does not restore scrolling functionality, even though the field's time data is restored to a scrollable size.
Steps to reproduce the problem:
Set the first timefield to the maximum time (11:30pm).
Set the second timefield to 11:00pm.
Set the first timefield's value back to an earlier time (5:00am).
The second timefield's time range is adjusted appropriately, but its scrollbar will have disappeared.