MS Teams Meeting transcription showing organizer and/or attendee as speaker 1

Hi all,

I have a "weird" issue with MS Teams Meeting transcription.  

The meeting transcript shows my name as "speaker1" when I attend the meeting as organizer and/or attendee. 

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Speaker 1
Uh-huh.

0:0:3.80 --> 0:0:3.690
Speaker 1
OK.

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This happens to some of other users as well. 

Some posts said it may be caused by Teams setting > Recognition > Voice setting. 

However, I was unable to find anything I can try and test.

If any information will be appreciated. 

EZethan