Crop gif avatar issue

When user try to load animated avatar forum will open crop editor to them. But in any conditions of file, crop settings they are not work. Avatar load as is and resize to square (so some rectange avatars will see bad).

I think forum can't have ability to crop animated gif's. So, if you create this ability - it will be perfect. If else, then may be better detect type of image and if this is animated gif - don't open editor?

Thanks