I've tested both the binoculars and the night vision attachments today and they are both still not working 100%.
The attachments
I've tested this with the night vision attachments of the CR weapon and although it seems to work better, I still can get enemies in my range in direct sight that aren't marked.
The binoculars
It sometimes just doesn't work and sometimes works. In the video below, you can see this. I try to look through the mountain on Hoth and it doesn't work. Then just before the video ends, you can see that I was able to look through the hill and see enemies. Thus still very inconsistent.
I've tried to better determine when it doesn't work and it seems to happen if you do something like the steps below. Keep in mind that I am not 100% sure of it.
Hey, sorry - as it has been mentioned before me, the tag is not visible anywhere (except emails, which I rarely check...), so I didn't notice your question.
It doesn't seem like that any fix or improvement was made. I could write a list, from "rarely ever bugged" to "100% useless":
Lando's blaster > Bossk's vision > Boba's reveal (map) > Boba's reveal ("wallhack") & Binoculars > Scan Dart.
I've played a lot as Lando, and it was extremely rare to see his blaster bugged. Same for Bossk, but it happened a lot more, and it's also more problematic, since you tend to activate that ability to get out of a sticky situation - blindness does not help with that. With Boba's reveal, it seems like that the minimap markers are more reliable than the actual wallhack-like reveal, the latter rarely ever works for me.
Couldn't really decide where to put the binos: I don't really use them, but I've noticed them to be bugged quite a lot of times out of those occasions.
And then there is the Scan Dart: that's just 100% bugged, at this point I would just simply remove it from the game and replace it with something else.
It also happened to me with the Specialist Infiltration not showing enemies on radar and with Lando's scope not applying the night vision overlay on enemy units after January's Hotfix Patch
