We're receiving reports of white washed images in 10.13 High Sierra.
We believe this is caused by a bug in the way files were saved on 10.12, which causes them to display incorrectly on High Sierra. This issue would primarily affect images that were uploaded from 10.12.
For now, the workaround is to re-upload the image from a computer that displays the image correctly. Sorry for any inconvenience this causes.