There is some sort of bug with Bitwig 3.3, when using the mod wheel on an external keyboard. The mod wheel is being ignored from my keyboard. The mod wheel indicator in the Vital GUI does move with MIDI input from the keyboard, so it is receiving the input.
If I change the mod wheel using the Vital GUI, the modulation works. Strangely, mod wheel automation from Bitwig via the time line or a Bitwig modulator is also working just fine. It only seems to be ignored when the MIDI comes direct from my keyboard, even though Vital recognizes the input by moving the GUI mod wheel.
My other synths don’t have this issue.
This is on Mac, VST2, in Bitwig 3.3. The Keyboard is a KK S61. I’m using the Jürgen Moßgraber KK scripts.
I tested this in Ableton 11b19, and in Logic 10.6, and the mod wheel works just fine there. This only seems to be an issue with Bitwig.