I think it's for all Arturia applications that the values are not seen in the applications value display (that unfortunately is placed at the bottom of the applications), when you control them with a hardware control.
It would be nice if the values was displayed there too.
It's unexspected behavior and as such a bug as i see it, but if it's intendeed behavior, then it's not a bug.
It would be nice if Arturia commented on this.
I use Stand Alone and VST3 versions of all Arturias applications, and it's the same in both.