TGLAxisPainter silently modified the Z axis tick length to a fixed value 1. (#8621)
TGLAxisPainter silently modified the Z axis tick length to a fixed value 1. (#8621)

The Z axis tick marks length was then wrong when drawn in a 2D canvas
This was discovered by: https://github.com/root-project/root/issues/8618
olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root,olifre/root