V3d_Trihedron Labels not visible

I have recently upgraded from OCC 7.4.0 to 7.6.0. In the upgrade I have noticed that the text (X, Y, Z) on the Trihedron is missing. I have tried using the "simple" TriedronDisplay function as well as manually defining a V3d_Trihedron. The code I am using is below.

Is this a bug? Or is there some function I am not seeing in the documentation which I need to show the text.

Thanks in advance!

Attempt 1

myView->TriedronDisplay(Aspect_TOTP_LEFT_LOWER, Quantity_NOC_BLACK, 0.15, V3d_ZBUFFER);

Attempt 2

Handle(V3d_Trihedron) tri = myView->Trihedron();
tri->SetLabels("X", "Y", "Z");
tri->SetLabelsColor(Quantity_NOC_BLACK);
tri->SetScale(0.15);
tri->SetPosition(Aspect_TOTP_LEFT_LOWER);
tri->Display(myView);