Comment 34 for bug 1749800

At the moment I'm only able to reproduce the crash using the latest build if I don't use backtracing.
Using backtracing I get the behavior that Mixxx doesn't do scratching while touching and moving the jog wheel for the first time (after starting Mixxx). This would also be the crash situation when I'm not using backtracing.
On touching and moving the jog wheel for the second time I get the expected behavior (scratching).

How else can I submit you the necessary information to see what's happening here?
What else can I do?

Again the actual procedure to generate the crash:
- Booting up MacOS
- Plugging in the MIDI controller
- Starting the terminal and enter "lldb /Applications/Mixxx.app/Contents/MacOS/mixxx"
- After that enter "run"
- Now in Mixxx go to the preferences and change the master sound output to the controller sound card channel 1-2 and headphones sound output to the controller sound card channel 3-4 (setting before is "Build-in sound".
- Apply the settings and close the preferences window.
- Load a track to Deck 1 and press play.
- Touch and move the jog wheel -> Track is just stopped/paused instead of scratching back and forth.
- Release jog wheel -> Track is playing again.
- Touch and move the jog wheel again -> Expected scratching is working.