Date time pickers, time pickers and the date input components do not support millisecond editing or selection via the incremental steps functionality, manually typing values or using the buttons to open the time popup. There is many situation where a date time with a millisecond value maybe required and while preset values can be be displayed in v4.3.0 it would be helpful to be able to change these like the other values so they don't display the same millisecond.