I just tried master and the latest 2.1 buildserver build on macOS 10.13.6 with a Hercules 4-Mx and can't reproduce. I'm using the built-in Hercules 4-Mx preset.
- Start Mixxx (built-in interface and Hercules 4-Mx enabled at boot)
- Load track to deck 1, hit play.
- Enable "Scratch" button on Hercules 4-Mx deck 1.
- Pref -> Interface -> Change primary output to Hercules 4-Mx Channel 1/2, no headphone output.
- Turn jog wheel.
Result: Audio pitch bends like normal on first touch.
I just tried master and the latest 2.1 buildserver build on macOS 10.13.6 with a Hercules 4-Mx and can't reproduce. I'm using the built-in Hercules 4-Mx preset.
- Start Mixxx (built-in interface and Hercules 4-Mx enabled at boot)
- Load track to deck 1, hit play.
- Enable "Scratch" button on Hercules 4-Mx deck 1.
- Pref -> Interface -> Change primary output to Hercules 4-Mx Channel 1/2, no headphone output.
- Turn jog wheel.
Result: Audio pitch bends like normal on first touch.