Typed value lost when clicking widget

[MatteS75]

When widget is open, typing a value in the hour field using the keyboard, and then clicking increment button on minutes, makes the typed value disappear.

1. Open widget
2. Type hour using keyboard
3. While still in the hour field, click increment minute button
4. Hour is reset. Expected: Hour to be kept.

Try it here: http://jdewit.github.io/bootstrap-timepicker/