This still doesn't work on an Apple Watch. Anyone have an actual solution? Why would it not work on the device but it does on the simulator?

Here's the stack overflow explaining the problem and the answer: https://stackoverflow.com/questions/67324651/why-do-diffable-datasources-treat-class-and-struct-types-differently Need to inherit from NSObject and override isEqual(_ object: Any?) -> Bool and var hash: Int