i use the plug in for the Xhc almost 1 year with the Ftp versions without any bugs
i use the 4 axiss Xhc and manage only one button as custom Gcode to open the spindle for manual tool change
BUT last week i have in my Mdi line M3 S 1500 that i run before and stop
then i want change tool and when i press the custom button on the remote its do 2  ,open the spindle and immediately start rotate
very very dangerous
after that i disconect inverter and make some test and i confirm that several times(not all times) when you press
on the buton on the remote its run M3 or M4 sometimes for several second
my VFD its 0-10v plus relay so its cant be noise its bug command that Mach create
please guys take care for this its very dangerous,and befor this new version i never mat such problem