[Bottox]

Simply because the quest is not parsed. There are 31 daily quests for Namazu (x4 jobs=124). 4.3 is out since 9 days. I grab 3 quests a day (randomly) on 3 characters. I simply didnt have this one since the release. All quests are not ready, since the game is choosing for you the quests you grab. You need to wait that i grab the quest, parse it, test it, optimize mesh etc... We never said all quests could be ready 3 days after the release. We are rank 6, like you. We do 3 quests a day by character, like you.
We actually miss 8 quests as crafter, and 10+ quests as Botanist/Miner/Fisher, so definitely, it will do this until all quests are ready for minion.