With the new achievement system, players will want/need to get these bugged entries.
I've also had several others not in this list that were bugged at the time, or simply didn't work for me.
For example, I have a Jedi Sentinel I've played since launch, and I never got "Jedi Weapon" on Tython when I got my saber. I've put in support tickets and they never unlocked the codex entry for me.
Same situation here with my Sentinel. If they don't fix Codex with 2.0 and people won't be able to get achievements... well, that will be another fail from BW. Like fixing something like Codex for more than a year isn't.