My normal avatar image is 384x192px (.png). During some testing to determine how avatars are scaled, etc. I also uploaded an image which was 192x96px. In both cases I am now unable to set the crop position using the Avatar Editor. The Avatar Editor overlay stays open and when I click close, the position resets. This only seems to occur with images which are exactly 384x192 or 192x96. I was able to upload an image of 768x384 and was able to set the crop position successfully.