The profile pic upload/avatar editor page has been through another reamp, and now does images that are 400 wide by 500 tall, pushed at a higher resolution to fit in the same space as the old profile pics.  This is sort of like a 50" TV that can play SD, versus HD versus 4K images.  Same physical size, but higher quality.  All old images at 200w by 250th are still full size and usable, but we went 4x bigger and now it allows room for retina and other improved high density display device.

Also, animated gifs in our current version are unable to support image layers/text at this time.  This is planned for the new site, but just not worth delaying progress to bring that support over here for that short amount of time. 

Anyway, everything should be smooth and happy, but if you have any issues please post here and I'll check it out.