Prusa Slic3r vs Canvas
I use a Palette 2 with both Canvas and Slic3r with P2PP. I get vastly different outcomes slicing the same split .stl's for my mail truck test print. Slic3er seems to work great and I am able to print the model with the Palette. The Canvas slice is a horrible mess. The models are sliced in the same orientation with the same settings in each slicer. See screenshots.
Sorry for the delay in replying.
It seems that canvas doesn't like the SimplyColor3D models. We're not sure why. Only Mosaic could address that. In the mean time, as you discovered, the work around is to use p2pp.
Yeah, I dropped Canvas completely. Working exclusively with P2PP with good results. I love SC3D btw. Keep up the good work!