This problem is not happening any where but Lush.
A lot of suggestions! I guess no one else is having this problem?
I find this only happens to me when I upload pictures that have been taken on my iPhone.
I use another app, import it and save so its saving as a separate image - a picture rather than a photo, and that seems to work.
Or I screenshot from my computer.
I don't know if this is similar to your issue or not but I always have to do it to change my avatar.