Seriously, I know for a fact there are more people experiencing this...

The hotfix was for triggering the revive symbol automatically. There were NO hotfixes mentioned related to the nanite injector not working, though. As far as I know, the devs are either not aware of this problem, or they're not acknowledging it, as there hasn't been a single reply to any of the threads that mention this. They have replied about the call for help thing, which they now released a hotfix for (for what it's worth), and the ragdoll related not being able to find the correct place to use the needle issue, which they are hoping to maybe try and do something about at some point in the future (paraphrasing here, but you get the drift)... But while this problem of using the nanite injector not actually resulting in a revive may very well be related to one or both of those, it is still a separate issue.

Of course then there's the really abysmally working equipment selection wheel (not to mention being the only specialization that actually requires one to spec into the specialized suits), so I really have to thank CCP for making being a logi so fun and rewarding...