A new way to label your issues is here with Gravity. For each issue analyzed, Gravity will suggest 0-6 labels that are relevant and haven't already been applied.
You can find these suggested labels on the issue detail view, along with checkboxes next to each label. By default, all labels are checked, but you can choose to ignore all labels or deselect specific labels and add only the remaining selected labels.
The suggested labels are also in the issue's Gravity Glance, where you'll see a table with the confidence score for each label, as well as an action to add the label to the issue.