A few observations.
1- Kershaw entered the game as F3----so quite fatigued. Hence I don't think it's a glitch.
2- Hendricks pitched more than 10 innings in his last outing. Because Hendricks is a non-*SP, per rule, he needed 5 days of rest:
Super Advanced Starting Pitcher Rest Chart
* PITCHERS
IP - Days of rest needed
0-2.2 - 1 day
3-4.2 - 2 days
5-9.2 - 3 days
10+ - 4 days
non-*PITCHERS
IP - Days of rest needed
0-1.2 - 1 day
2-3.2 - 2 days
4-5.2 - 3 days
6-9.2 - 4 days
10+ - 5 days
3- It's the first time, though, that I see this rule implemented. I used to see pitchers going for 10-11 innings and come back not fatigued in the next outing. Intriguing.