There are some relection-like lines in the GRASS tiles. The mesh doesn’t have anything special in that spot, and it is only on one side. I thought that it might be a problem with the material/skin/lighting, but someone told me that the models get imported into TABLETOP SIMULATOR (that’s where the image was taken) without lighting etc. and that the TTS does its own lighting. So what could be the source of this imperfection?
This is the .svg posted on pastebin in raw-mode:
Should I post the blender file?