This problem will have to be fixed by Arturia as a matter of urgency.
This it quite an expensive keyboard, and it has great features, but is totally unfit for purpose at the moment. I used to stick with the big names (the 3 big Japanese brands), but I thought I’d give Arturia a chance, and boy how I regret it now… 
I’ve uncover another bug; I’ll make a new post for it in a minute.