http://raw.communitydragon.org/10.24/cdragon/tft/en_us.json
http://raw.communitydragon.org/10.23/cdragon/tft/en_us.json
simply search "game_item_displayname_3075" in the above json file, thornmail's "name" field is "game_item_displayname_3075" and not "thornmail", I double check http://raw.communitydragon.org/10.22/cdragon/tft/en_us.json which shows "thornmail".
Is this a bug?