I've given up on exploration and other codex thingies because I can't deal with the amount of bugs the codex has even after two years. I doubt these issues will ever get fixed since the only thing BW cares is the Cartel market. So, let's ask them for a CM Codex unlocking thingy.
That's unfair, they have been fixing stuff all the time. Take Loremaster as an example. At the start, maybe 7 planets were bugged and now it's achievable. We're one away from Beastmaster now too.
They are fixing these. Maybe not as quickly as we'd like, but I don't see any evidence that they've given up. This particularly bug affects a small number of players. The achievement is not fully bugged as some of the others are. So it probably gets a lower priority.