It appears that the green discount is calculated and extended as the red discount
Say line 1 (green) is priced at $100 and the discount is 10%.
Say the second pricing line (red) was changed to $120 → the 10% discount should be $12 but is shown as $10*the qty for the $100 line.
The discount for the second pricing line is not editable.
Thank you for letting us know about this issue. I have been doing some testing but I haven’t been able to replicate this so far. I will be doing some more testing and get back to you.