Strange failure to stop behavior on Altmill

I’m not sure whether this is related to the super longboard or gsender. I was running a file on gsender and decided to bump up the spindle rotation speed. The spindle responded and continued moving along the X axis for about 1 inch (a 3d finishing tool path) and stopped moving, spindle was still spinning at the new speed. gsender didn’t error and stop. I hit the stop program button on gsender but the program did not respond and the spindle continued to spin. I hit the Estop button on the Superlongboard and the spindle continued to run! I unscrewed the power cable to the spindle to stop it. I had to power off the alt mill completely and restart gsender to get everything reset. The file is now running again from the beginning and is working correctly. Has anyone else experienced this?

Thanks, I’ll check for updates.