Bug useImageCache and Relay Browser behavior

I had a problem with my KOL Mafia and Opera browser at work - basically, some pictures couldn't be displayed, randomly (dev console says something about timeout). I blame my network provider, as at home it works as intended.

But I accidentally discovered that it happens only if I use image cache. If I disable cache with set useImageCache=false command, everything works. Always. So I was happy for some time. Until I discovered that _some_ images now doesn't load in Relay Browser ever. Most notable are player avatars - for each one I got an empty picture, and dev console says something like
Access to image at 'https://d2uyhvukfffg5a.cloudfront.net/otherimages/classav51.gif' from origin 'http://127.0.0.1:60080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Can it be fixed somehow?
 
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