05-24-2020, 09:31 PM
What color is the "transparent"? If there are transparent pixels in the PNG image, their color is whatever the image viewer decides (white, black, checkerrboard...).
The same should apply to the thumbnails, but the thumbnail creation could ignore the pixel opacity bits, in which case you would see the color set by Gimp in these transparent pixels. Depending on your choice for the Save color values for transparent pixels option, you see black (color discarded) or something else (color saved).
The same should apply to the thumbnails, but the thumbnail creation could ignore the pixel opacity bits, in which case you would see the color set by Gimp in these transparent pixels. Depending on your choice for the Save color values for transparent pixels option, you see black (color discarded) or something else (color saved).