Well if its should work like in sa-compendium and not like in the core book.
I am not sure this will help clear things up, but I don't think it has been said explicitly so I will give it a go ...
The Sage Advice Compendium does not
change the rules stated in the core rulebook. What it does is clarify the potential ambiguity in the original rule as written that you identify, and make clear that the intention was
always that Barkskin would not increase AC that was already 16 or above, only raise it to 16 if it was lower. The advice exists because others had interpreted the original rule in the way I think you had, and it was causing debate and confusion. The advice was issued to clear that up.
Which, of course, is not to say that any group of D&D players cannot homebrew to use the alternative interpretation of the rule, but a game like BG3 is probably better off sticking to the rules as written. Not that it always does!
Also i think the tooltip should work like in sa-compendium if Larian was designed barkskin according this book.
Yes, I agree there is definitely a bug in the tooltips when Barkskin is applied to our party members with AC<16, as per the screenshot of Gale I posted somewhere above which says something like "Base AC 10, Barkskin +6, Dexterity +2", when either the dexterity bonus shouldn't be mentioned at all or the calculation of AC without Barkskin should be given and then the Barkskin increment given as the difference between that and 16. At the moment, it's really not helping given that there can easily be confusion about how Barkskin works already!
EDIT: And I should have said, you are of course right that your feedback was requested by Larian and it's also right that you post it here. I'm sure it is no-one's intention to make you feel that you cannot give your views, but we also try to help one another overcome any confusion about the way the game works. I know that there have been things in the past that I have thought were bugs, but turned out just to be my misunderstanding of what was intended behaviour or the 5e rules. Of course, I still might not like how they are
intended to work and, if so, I'm entitled to say that too, but at that point it becomes feedback rather than a bug, and if other forum members disagree with my suggestions then they are of course as entitled to do so as I am to state them in the first place!
