I have been discussing this with Apple and trying to figure out the problem. This had been a system wide a problem with me. I am a blind user and had been running with the screen completely dark (brightness at zero and or screen curtain on) and it was causing the functions to work incorrectly and the logs to not be logging correctly either. If the screen brightness is brought up just a little bit, it makes all functions work correctly. Please take a note for your blind users since many of them do this. Apple is aware of the problem and it should be corrected in the next update.
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