I'm not sure if anything has been done about it, but I think it's a slightly overblown issue. I've been using a keyboard with BOX Royals at work for about five months, and a few keys are affected by this, but I don't notice it unless I press each key individually specifically listening for it. In my experience, it just affects sound and not feel.
The fact that it's caused by lube that rubs off of the actuator nub (Idk what it's called) makes me think the only solution would be to make the switch tops open-able from the top like Cherry or ALPS.
Sorry for not actually answering your question.