Whether the joint design is permitted or not, within D1.1 criteria, D1.1 allows the EOR to modify, add to, or delete from what the code defines as his/her responsibilities.
D1.1 allows CJP and PJP butt joints of unequal base metal thicknesses to have a contouring fillet weld applied over these groove welds in static applications. This weld reduces the severity of the stress that would otherwise be present before this fillet weld is added. The picture doesn't look like a continuous contour.