About a day ago this post was made over on sh.itjust.works.
It has proceeded to cause the Sync for Lemmy app to either fully crash or to crash and restart as reported here.
Upon testing it doesn't appear to be the image as when posting, the PNG image link, WEBP image link, embeding the PNG image or WEBP image, Sync can open or view the image without issue.
Edit: Sync has been fixed.
But the mystery gets deeper as the above testing works fine when using the default "lemmy.world" interface but when I attempt to post a link to the image using the "old.lemmy.world" interface it crashes to what appears to be the webpage within the comment section (as shown here).
This is what I was attempting to post ("lemmy.world" - Worked, "old.lemmy.world" - Malfunction).
Test link [Test](https://lemmy.ml/pictrs/image/b733f506-7837-415d-a761-e3bea08c0594.png)
This is a test link to see if it is the image