I upgraded my PrusaSlicer to Firmware 3.13.1-6876. Now my bed heating is intermittent some stl files that I download and try to print will heat the bed, some will not. I checked the PrusaSlicer to see if the G code was in to heat the bed and it was M140. I can preheat the bed using that function on my printer a Prusa i3MKS.
Do you have any suggestions?