UltraTimeSpanEditor Format of Hours still assumes days

I'm using version 17.1.20171.2043

If I add an UltraTimeSpanEditor to a form and set it's Format to Hours I would expect to be able to type "1" and tab out of the editor and have it result in "1 hr".

Instead it defaults to "1 day".

I have been unable to find any override or cancel event handler that I can tap into to change this decision making.

Is there any way to have the control honor the Format property for the default unit?