[LinuxCNC/linuxcnc Issue#608] Halui jogging might not work in World Mode

Here are the steps I follow to reproduce the issue:

1. Open sim/axis/haui_pyvcp
2. Jog a joint from the pyvcp panel
3. Home
4. Try to jog again

This is what I expected to happen:

Jogging

This is what happened instead:

No jogging.

It worked properly before this:

This appears to be OK in 2.7. But 2.8 and 2.9(master) do not jog the axes despite (as far as I can tell) the HAL pins being driven correctly.

There may be a jog scale, speed or enable that is not being set correctly in the sim. But I have experimented with all the ones I found and not been succesful.