Looks like copied tempfile need to be flushed before further processing. This issue won't happen if the uploaded file has enough file size.
1.2 KiB
32x32px
1.2 KiB
32x32px
![](/bark/mastodon/raw/commit/ecf40d09ed42c15f1379718d70142434a72986f5/spec/fixtures/files/mini-static.gif)