Both inline to this comment that is linked, and in the upload preview, these thumb and banners animate.
However, on the community page itself, they remain static. Will “playback” of png sequence images or gifs be viewable for the icon and banners of communities? Or is this a hard coded block on animating meta images?
inline apng’s work, but i could only make my profile picture work with webp, not gif or png. have you tried that?