It's weird, because when I look at the 3-4 in the Formation section it shows LB1 and LB2 in the OLB positions on the graphic. However, LB1 and LB4 appear to be the same position in the settings and LB2 and LB3 also look to be the same.
The 4-3 Graphic is messed up as well, showing LB1 to be ILB, but the picture shows him an OLB.
Basically, I have no idea.