How do load an animated gif from a URL?

I'm trying to load an animated gif from a URL using the sprite object, but it only loads the first frame. Here's everything in my test project:

Here's a link to the project on the same domain it's trying to load the gif from:

https://www.mikerezl.com/giftest/

The top image should be the animated gif. The bottom image is just a static image for reference.

Is this just not possible?