join-lemmy.org now shows you a suggested instance where you can signup immediately. No need to choose an instance.

Found it now, crosspost detection actually happens in the frontend. It only works if posts have the same url and are shown on the same page.

Opened an issue, but it will likely take a while to fix.

https://github.com/LemmyNet/lemmy/issues/6413

So the problem only occurs after you use “Hide Post”? That might be part of the problem, I suppose that deduplication only considers posts that are visible to you. Though I cant find the corressponding code right now to confirm it. Best if you open an issue in the lemmy repo.

I see, that is understandable.

Yes I don’t doubt that you were having this problem, another post was also complaining about it a few days ago. It’s just that I cant think of any reason why this would happen if the image urls are identical.

I was asking Rimu, but good to get confirmation that it’s working for you at least :)

Did you receive my email from last Thursday? Seems there might be some delivery problem.

Good idea, adding this to Lemmy.

https://github.com/LemmyNet/lemmy/pull/6409

The code change is linked here: https://github.com/Chocobozzz/PeerTube/issues/2704#issuecomment-3914781110

Here are the posts on lemmy.ca, they both have the same image url and are also shown as crossposts:

• https://lemmy.ca/post/61638678
• https://lemmy.ca/post/61638723

So these should be grouped together without any problem, not sure why it would fail.

This is a known bug in lemmy-ui. Looks like the fix was not backported to stable yet.

https://github.com/LemmyNet/lemmy-ui/pull/3459

Edit: Fixed in #3968, will be included in the next 0.19 release.

Yes but apparently its not working for some reason. My first guess is that these posts have identical looking images, but they are actually loaded from different urls.

I cant find these duplicate posts, can you share the URLs that you were viewing? Is it possible that these identical images actually have different URLs?

You can subscribe to Peertube channels from Lemmy since a very long time. Recently there has been a problem with federation on the Peertube side, but that will be fixed soon.

If any Activitypub platform sends messages to an actor which they arent addressed to, thats clearly a bug.

This is wrong, Lemmy doesnt send private messages to followers.

You are right.

This is not correct, Lemmy sends private messages only to the single recipient server. Other instances cannot access it at all.

Not public. Private messages can only be accessed by your own admin, and the admin of the recipient. Other instances cannot access it in any way.

No problem, this is my job after all. And I got lucky to end up with a job like this :)