I have a Shapeoko Pro XXL (I just upgraded from an Shapeoko 3 XXL), on the new machine when LightBurn performs the home function the Z upper limit Stop / Switch is lighting but the SW is not stopping, it crashes into the stops and I have to hit the emergency power switch to prevent destroying my Z Stepper Motor Gears.
This does not happen 100% of the time, it is probably 3 out of 4 times. Sometimes it works just fine, but when it does not it is bad, it just keeps grinding when it hits the upper stop of the Z carriage. The X and Y switches all work just fine, it is just the Z stop.
This was not a problem on my Shapeoko 3 XXL, the upper limit stop worked 100% of the time.
I do not have this problem when using the machine for CNC machining, the X,Y, and Z switches all work flawlessly. It is only when using Lightburn.