SFSpeechRecognizer returns results with punctuation marks

When we used the SFSpeechRecognizer last week, the returned results were normal. However, it was found during the use this week that the returned results contain punctuation marks. For example, we say yes, and the result returns yes?

Is it systematic ? What happens with longer sentences, like "Yes, we can". Maybe a new version interprets intonation as interrogative ?

Long sentences are the same problem,like"Yes, this thing is mine",the result returns "Yes, this thing is mine?"

SFSpeechRecognizer returns results with punctuation marks
 
 
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