When using the custom arrow keys, actual value doesn't get input for countdown.

1. click any of the three up arrows a couple times.
2. hit start button.
3. Notice: None of the numbers you tried to increase are recognized when countdown begins.
4. Extra: Refresh and then type one of the numbers and use arrows to go up or down.
5. Notice: The numbers that get input were what you typed, ignoring subsequent arrow clicks. 