I haven’t heard of any yet. But I did lose an axle bolt I think I didn’t torque it correctly though when I installed the bdx rail brace. Or not enough locktite.
Those used to be just a 62032rsj sealed bearing pull a wheel and see if you can get a number should be replaceable unless they molded the bearing into the wheel (have seen that before) get a good skf bearing in their shouldn't have another issue or any issues after that!