sometimes when I use the editor to, well, edit a code. when I close it sometimes Mach wont display anything at all in the toolpath window. and regen doesnt work either. I can run the program and its fine. but only way to get it to draw a toolpath is to close whole program and relaunch it. Wich means rehoming everything and a big pain in the but to me.
so yes Ive had at least a similar problem.