I got an error during a long print (2day) that the print head face had been knocked off. Sure enough it was dangling, I put it back on and told the printer to continue.
It proceeded to PRINT IN SUPPORT MATERIAL IN THE PART! WTF? Why would it do this? It only printed about half a dozen layers in the wrong material and then went back and wasted the rest of the spool of TPU for AMS ($40/roll)
Why on earth would it do this?