Well;
if you had 9 Kp in bar and clock was at 3mins. for next Kp
and then you gain 6 Kp via Tournament
bar goes to 15 Kp and the clock stops.
once it goes back down to 9 Kp, it will start back from 1H.
Unless you meant your Kp bar wasn't full and even gaining 1 Kp brought clock back to 1H.
There was a glitch, similar things happened while using Inspiring Meditation.
The last 2-4 Updates have tried to fix this.