Commented Unassigned: Colors issue with unchanged pixels option [27]

Hi, I've tried both options, to detect or not detect unchanged pixels. The file with the detection on have color issues, while the other doesn't. During preview it was fine, after saving it I opened it in ACDsee and the colors issue appeared.

Please see attached file as an example.

Thanks.

JZF
Comments: Thanks for the prompt reply, Nicke. I've just tried viewing the file in question on my mobile phone and it displayed fine, but on the computer it didn't. How do I know what colors won't be displayed for the transparent color option?