[grbl Issue#1612] Firmware crashed on Geminitsu 3018 pro?

I had two possible firmware crashes on the Geminitsu 3018 pro in the last week with firmware 1.1h. I used the Universal Gcode Sender to send the gcode When the problem occurs the motor is still running but the head is not moving anymore. In the gcode console I can see the last gcode that was sent, but there was no “ok” response from the Arduino. Now I don’t know if this is an issue related to the firmware or the Universal Gcode Sender. Is there a way to debug this to find the cause of the issue or is this a known problem of the firmware?

Edit: I just found in the FAQ that the CH340G chip can cause serial transmission problems. The machine I’m using has such a chip on the Arduino. I also have another Arduino with an FTDI serial Chip. I will test if this one works better.