I was following this tutorial
and he shows the new Input System passing the callbackContext but when I tried it doesn’t. Not sure if I did something wrong or if this is a bug. I am using 2019.30b1
This appears to be a bug in the Unity 19.3 beta.
Same for 2019.2.6f1
Unfortunately, it is now, yes. It turns out that the change which introduced this bug was back-ported to 2019.2.6f and to 2018.4.9 - so both those release trains need the fix back-ported as well 
Hey Jonas, any ETA on when it will be fixed for 2019.2 ? Thanks for the hard work !
It will be fixed in 2019.2.8.
Cool, looking forward to it !
Hey i think i’m getting the same issue in 2022.3.10f1