it doesn’t hurt, but is there a way to fix this.
are you sure you are using the rgb mode and not the indexed, if you are using the index color mode them you need a mask index in your color palette(put it in the first position that will do the trick)
yes im using rgba, i think i found the problem, this occurs when switch betweeen dark mode and light mode(Windows10) too often and probably some opearting system code didn’t clear the cache.
in particular , the dark background is probably added by dark mode , and there’s also white background added by light mode, I have no idea if the latest windows have fixed this problem.
anyway, thanks guys.