Post

Yep they work

No, they don't. You can upload them on the web as a "video", but it fails in the app. They don't show in the video picker. They show in image picker but won't be animated when uploaded.

Working in the app

Great, I literally tried it from the app and it didn't work (GIF doesn't show up in video selector). With the same GIF and same phone where it did worked fine on web. ¯\_(ツ)_/¯

(By "working" I mean "works to post it", not to view it. Viewing works everywhere because Bluesky just converts it into a video, it's not different from other videos.)

No luck in iOS app with video upload of a GIF

If you try image upload, Bluesky app shows it animated while you compose the skeet but then just shows a static image