The same bug also happens with ARP 2600 V and Modular V. I have even reported it 1.5 years ago, but Arturia never fixed this, altough they promised to do so.
I really like some of their plugins very much and was also considering the upgrade because Spark 2, but I am also very tired now with them and disappointed that they not only don't fix the bug but even introduce it into Matrix 12 V.


