Just like Tobias Fenster reported on https://github.com/Microsoft/AL/issues/122 the issue is happening to me today having created a fully new Azure machine for the Development Tool Preview only yesterday.
Could you please provide us with a repro?
It's the exact same repro as mentioned in https://github.com/Microsoft/AL/issues/122, that's why I did not repeat it here.
It's a know issue and been there for a while. I even noticed that Steward did not do it during his demos so I think the team is aware of it.
I'm still a little bit in the dark about the value proposition of the tool and my current thinking it is more of a nice toy for customers than something partners would use.
:-) But on https://github.com/Microsoft/AL/issues/122 it was however reported as fixed.
I can reproduce the issue by following steps from #122 with the exception that there is no field called "Line Discount %" but instead "Payment Discount %".
We will look into it.