Bug of lap time

I like it.
But it has a bug.
When the lap mode, tapping Stop clears the lap time.
1) Select Lap mode.
2) Tap Start.
3) Tap Lap at 00:10:00 for example.
4) Tap Stop at 00:20:00 for example.
5) Tap Start.
6) Tap Lap at 00:22:00 for example. The lap time showed at lower space should be 001: 00:12:00, but this app shows 001: 00:02:00.

Thank you.

dkmng about Best Stopwatch, v1.07