in iOS14,NFC API can not detect tags after restartPolling

I read a typeB card by NFC API.I'll run this method when there's a card reading error:

[self.session restartPolling] ;

but after that,the delegate tagReaderSession:didDetectTags: will not be called sometimes in iOS14. This is a low probability event that can be reproduced in about 10 or 20 retries. Has anyone had this problem? Is there anyone who can help me solve this problem? Thanks, guys.

Has anyone had this problem? Thank you very much, guys!

in iOS14,NFC API can not detect tags after restartPolling
 
 
Q