Yeah I had that same issue. Ben Anderson tweeted though that Kessler played the last 5 minutes and had 3 boards and 5 points.
So.... his per36 stats are now 36 points and 22 rebounds.
But then again, Kerr gave an interview about how Paolo Banchero will play a lot of 5 since he wants someone on the 5 who can push the ball fast in transition, and I guess Kessler is always gonna hand it off instead. So I'd expect that we see Kessler at the end of bench with garbage minutes only, unless there are injuries.