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
![](/asonix/mastodon/raw/commit/f4ed6e36a4e5d183b30050fb52d631a07da74d11/spec/fixtures/files/mini-static.gif)