There are a bunch of different examples out there, just search for "face detection black people." In one example, Google Photos tagged a pair of unfortunate folks as gorillas. In another, HP had some webcams that tracked faces but couldn't track black people. Kinect had a similar problem. Nikon had a "did someone blink?" message that produced a lot of false positives with Asian people.

My point isn't to excuse it, and indeed I'm not even trying to address the moral dimensions of it. My point is just that if this is a Chinese product developed for use in China, it's entirely possible that it won't work well on non-Asian faces without additional work.