Duplicate content when getting connection back after lost connection

[raine]

There are a few old posts that describe the content duplication issue:

https://discuss.yjs.dev/search?q=duplicate

This one might be of help to you:

Initial offline value of a shared document

Hey, I’m hitting a slight snag where I have a situation where two (or more) people enter a document in an offline state. This document say has a initial value that can be whatever a document template defines it to be (a real example would be e.g. slatejs editor framework requires an empty first text node to be present on initialization). Now two people go to the same document in offline mode, so both their documents are initialzed with the initial document value. When one goes online, all good…

I’m not sure how the lost connection you describe is triggering it, but it seems similar. There must be some logic that thinks the Doc is empty or does not exist when it actually does. It needs to wait until it syncs to be absolutely sure the Doc hasn’t already been created before initializing it.