there is no field to add or edit labels while editting/creating tests,
however when using shortcut "l". it shows it creates a new label but that label is not available in test summary.please refer attachments
To display the labels filed on the test summary page, the field should be added to the screen while creating an issue. Please check whether the Label filed is available on the Create/Edit Issue screens you are using and add if not present before you create an issue.
The below link will facilitate you to check/add the Label fileld to the screens.
Once the filed is available the lables defined will list under the lables page.
Swapna Kumar Vemula.
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