I suppose that's not a bug strictly speaking (so long as all values across all categories are unique) but given the uniqueness guarantee isn't enforced anywhere it seems like a bug waiting to happen. I'll open a new issue to discuss this because there's a reasonable argument for not adding a category label
This isn't strictly a bug for the reasons I listed above however introducing a label attribute would be reasonable for a few reasons:
Makes category values less likely to clash with values from other categories
Places the responsibility for uniqueness on the component/sensor/algorithm generating the category values rather than making ADAM need to ensure uniqueness across all category values and raise an error if that is not kept
This isn't strictly a bug for the reasons I listed above however introducing a
labelattribute would be reasonable for a few reasons: