A typical mistake would be that your file is not a PNG. You should also have a 16-bit grayscale, not 8-bit. I still don’t know what you are doing wrong. Just suggesting according to my own bug on the matter.
A typical mistake would be that your file is not a PNG. You should also have a 16-bit grayscale, not 8-bit. I still don’t know what you are doing wrong. Just suggesting according to my own bug on the matter.