It just appears as a static image on Infinity. I had to tap on it to go fullscreen and start playing it. Though the app is still in beta, that might change.
Reddit added the same functionality some time ago, I'm a bit sad it's a thing here too but oh well. People seem to like it. My favourite thing about reddit was it being text-based though
How are you seeing gifs in kbin? All I'm seeing is a url link to the gif and have to click the media icon button next to the URL For it to load...... is there a setting I need to enable to load pictures/gifs automatically?