locked WSJT-X not Answering Calls #FT8

Dale Martin, KG5U

I noticed the other day that WSJT-X(v2.3.0) is not recognizing calling stations in response to my CQs. In fact, it just continues calling CQ in spite of there being 1,2,or 3 callers showing up in the Rx Frequency pane answering the just finished CQ. I've checked my settings and cannot find anything that might turn on/off such a feature. 

Thanks for any info anyone can provide. 

73, dale, kg5u

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