The same problem is even in iOS17.0.3.
buvtopcc
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My application there are more twice many devices installed in 17.1 than 17.0.3，But at present, has not reported 17.1, only 17.0 ～ 17.0.3，Seems to have been fixed? Take another look。Besides everyone is also crashing in child threads? Check whether child threads call TTS