When connected to “flaky” wifi, sometimes publishing fails. When it becomes possible to publish, all the images are uploaded again. That’s ALL, not just new ones.
When you’re uploading using a HotSpot on your phone, and using roaming data, it become eye-wateringly expensive.
How can this re-publishing quirk be avoided?
I guess Sparkle should behave differently when an error occurs. But there are some scenarios where an error from the server can result in Sparkle no longer having a correct perception of what files are on the server, and a full re-upload as a consequence. I don’t think there’s anything you can do on your end, except ensure a stable upload.