There was, if I recall, a similar issue with some external controllers.
I found that the CS-Lab controllers would runaway when doing a certain combination of jogging, maybe Shift Jog. I think possibly also the SmoothStepper suffered.
I know I reported the issue to CS-Lab and they sorted it within a day or so, think the SmoothStepper also got sorted.
I don't think it was exactly the same issue as you have as it was definitely a combination of keys when jogging that caused the issue. I very rarely use a keyboard to jog, just use the MPG, so only found it when I was testing after someone else reported the issue.
Regarding 066, there were issues with homing when using non standard methods, also some people had issues with tool changes, so it seemed it was macro issues.
In turn there are also issues with the wear offsets and a few other things.
I do not recall any jogging issues though.
You will find older versions on the ftp site, link below.
ftp://machsupport.com/Mach/Hood