after upload image, change the name of image in "Online files". edit the "Image name" and press "submit" button, everything looks like fine.
but when view in search result or "Latest uploads" or "Most popular images", the image name is not modified at all.
who knows the reason?
for example: https://www.facebook.com/photo.php?fbid=513837805351743&set=pb.100001765849107.-2207520000.1375688736.&type=3&src=https%3A%2F%2Fsphotos-a-sea.xx.fbcdn.net%2Fhphotos-ash4%2F1005333_513837805351743_967236132_n.jpg&size=559%2C415