"He still wants to come back and, you know, shoot the show,” Kris told Maria Shriver at Thursday night's Architects of Change: The Conversation Series event in Los Angeles. "He just wants to feel good. It's not that he doesn't want to be on the show, it's just he wasn't feeling good."
Kris explained that her son just needed a time out.
"He's still part of the show, he's had a year where he kinda wanted to chill,” she added. “He hasn't been feeling well -- we didn't really know why -- he was just diagnosed with diabetes. So, we're taking care of that."
The family matriarch also said that she sees Rob frequently, and stressed that he still enjoys the family's spotlight.
"He's always around, I mean, I see Rob every day," she said. "I think Rob enjoys all the family stuff we do -- he loves his business, he has a sock line and his stuff -- but I think it was just the perfect time for him to take a little hiatus because he does that."
"We were doing that ... we told him, 'Just get well, feel better,'" she continued. "He was depressed, you know, just wasn't feeling good, didn't know why."
Rob wasn't the only child Kris she opened up about during her candid conversation with Maria. She also surprisingly called some of her daughters' racy photoshoots "cringeworthy," particularly Kim's infamous 2014 Paper magazine cover, which showed off her bare butt.
"I don't even know that they're coming out," Kris admitted about some of the photos her daughters have posed for in the past years. "Like [Kim's] martini glass on the booty. I obviously know for the little ones [Kendall Jenner, 20, and Kylie Jenner, 18] we have people on set if they're underage."
… We wonder what Kris thought of Kylie Jenner's Interview magazine December/January cover, for which her youngest daughter was criticized after posing in a wheelchair.