Changing label breaks "Extend" mode

[int-sst]

When translating plugin.tx_dp_cookieconsent._LOCAL_LANG.de.cookie.category.1 = Statistiken
in order to translate the cookie category label in the "Extend" mode, the category identifier in the cookie is also set to the new, lowercased label:

{"status":"approved","checkboxes":[{"name":"statistiken","checked":false},{"name":"marketing","checked":false}]}

The translated label seems to be used as an identifier thus breaking the expected functionality.