Keyboard does not appear after time select

[ManDay]

Minor glitch: A click on the "Log Values" FAB brings up the dialog with the input box preselected and the keyboard ready-to-go as by #222 . When the user taps the time or date field and confirms a new timestamp, the input box is still preselected (highlighted and cursor visible), but the keyboard is gone. The keyboard only reappears after tapping the input box.