Commented Unassigned: png after resize() totalcolor will increase [1371]

png after resize() totalcolor will increase

png8
image.totalcolor=32
image.ColorType = ColorType.Palette;

and I after resize(980,0)

it change to
image.totalcolor=213
image.ColorType = ColorType.TrueColor;

This should be a bug
Comments: Are you sure that you are writing a PNG8 file? Could you add the following to make sure you do? ```C# image.Write(@"PNG8:yourfile.png"); ```