The problem may be how we read the sentence.
It reads "will now take group composition into account."
This does not immediately translate into "only drops for classes represented will occur."
In all likelihood they just decreased the chance of non-represented class loot from dropping, not eliminated it altogether.
If that is the case, it is deliberately misleading. People wanted a guarantee that the columi item drop would be usable by one of the classes present in the group. For Bioware to make a change and specifically note it in the patch notes and then not deliver on expectations is dishonest. If this is how they're going to conduct business, then they need to do away with the ambiguous language in the patch notes and state exactly what they're doing.
I don't personally think they're dishonest, I think they just screwed up and missed a bug in the system.