The bug is this, when you have multiple legendary companions (some say +3), the legendary buff which should be constant whilst your companion is summoned is instead fluctuating constantly. And I mean constantly. To the point where being at 100% crit chance instantly goes to 95% or lower (depending on companion stats) and it starts to suck, because it doesn't instantly return back. I've had moments where it hasnt returned by stats to the correct amount for over 20 minutes, this includes dismissing and resummoning. Why the issue is happening I honestly don't know, but this mod brought a new armour pen cap, and alot of people including myself use companions to reach the new cap, so when im in the middle of a fight and this bug decides naaaaah lets take that away, it really sucks.
I've just read through the latest patch notes to go live and the companion bug wasn't even noted under known issues. So thats well over a week with no acknowledgement at all. If someone would kindly acknowledge at the issue its noted and being worked on that would be great. Because those patch notes include not even a mention of it.