I'm not sure if this is on purpose, but the "standardname" placeholder in Data\Core\Defs\RulePackDefs\RulePacks_Namers_WorldFeatures.xml currently serves no purpose, which leads to some area names on the planet being generated without adjectives or other extra words. Theoretically, this could be easily fixed by replacing "standardname" with "r_name".
Thanks, maybe we forgot to update some names, will check.