We have issues that may have no label, one label (e.g. A), or multiple labels (e.g. A,B,C). I have been able to create searches that find issues that have no label, or have only one specific label, but I have not been able to create a search that finds issues containing a particular label. Everything I have tried fails to retrieve issues that have multiple labels (e.g. A,B,C) when I am interested in something like labels ~ B or labels !~ B. Help?