Hi,
We cannot reproduce that on OSX (El Capitan). If you can reliably recreate it on your OS, please submit a support ticket and be sure to include before and after images of the state of the track and Inspector so the support tech can see the bad result.
Additionally, restart your system and Studio One to make sure it's repeatable and perhaps not a random anomaly of some kind and if it happens with a specific NoteFX, not all of them, please inform the support technician of that also.