I placed a simple patch on SourceForge to fix a bug from a change on 2007-02-25
in which setup_tics() was moved from inside the colorbox routine to plot3d.c.
The oversight is that graphics.c also needs such a call if the routine is
removed from colorbox draw. (This is a case where some unification of 2D/3D
layout similarities would have obviated such oversights.)
Please consider moving that bug fix into the 4.2 branch updates if that is what
is being done for 4.2.