Will Monte - That is only specific to the Messenger app. The only way to get a GIF to load in a post that I have found is to use the "Embed URL" icon in the Froala editor. Just paste the link to the gif file there and it will animate for you.
GIF still doesn't work in covers, Background images, etc...that needs to change. Also SVG format is only accepted in Icons image upload and literally nowhere else. SVG is the best image format for web images so it should be enabled anywhere images can be uploaded.
One of the Gifs I tried to upload is almost as big as the width of my phone yet I've been able to upload it in discussion and comment section where it gets resized and animates fine. Also in Dolphin it was never a problem either for covers and backgrounds.