Input Datetime - Log Errors On Value Entry

If this is posted in the wrong place please let me know.

When I enter a value into an input_datetime component in the GUI I get errors similar to the ones below. I believe it is testing the value for a valid time before the input is complete.

2018-12-10 21:00:11 ERROR (MainThread) [homeassistant.core] Invalid service data for input_datetime.set_datetime: Invalid time specified: 2:undefined for dictionary value @ data['time']. Got '2:undefined'

2018-12-10 21:00:11 ERROR (MainThread) [homeassistant.core] Invalid service data for input_datetime.set_datetime: Invalid time specified: 22:undefined for dictionary value @ data['time']. Got '22:undefined'

I think the behaviour of this component could be changed so the value isn’t tested until the value entry is complete (for example when the data entry window is closed, “Save Value” button clicked etc)

Not a big deal, but seems like it should be pretty simple to avoid this error in the log.

Or am I misinterpreting something here?