Notes are not being shared properly

[laurent22]

1- On the Joplin server web interface (reported version on the interface: "Joplin Server v2.12.1, copyright © 2021-2024 JOPLIN.") , create two new accounts: testmaster1 and testuser1.
2- On Windows PC (Joplin 3.0.15), create a new profile and sync it to testmaster1.
3- On a Mac (Joplin 3.0.15), create a new profile and sync it to testuser 1.
4- On the Windows PC (testmaster1 account), create a test notebook with a test note inside. Share the notebook with testuser1, sync.
5- On the Mac (testuser1 account), sync will bring up the sharing dialog - Accept the sharing. The test notebook will appear with the test note inside.
6- Modification to this existing note will be synced bidirectionally (both testmaster1>testuser1 and testuser1>testmaster1). This is normal behavior
7- Now create a new note either on testmaster1's or testuser1's side inside the shared notebook and sync it up to the server.
8- This note will not sync to the other user. This is the bug
9- Additional test: if you stop the notebook sharing from testmaster1, sync testmaster1, sync testuser1 to clear the shared notebook, then re-invite testuser1 and resync testuser1, the new note created at step 8 will appear on testuser1's side.
10- Additional test: if you sync two different machines on testmaster1, the created note will sync on both machines.

So the bug is precisely the syncing of note creation between users of shared notebooks, both in the master>user and user>master directions (master being the account that shares the notebook). I suspect this won't work in a user1>user2 situation too.

Ref: https://discourse.joplinapp.org/t/sync-problem-with-joplin-server-new-notes-dont-sync-but-delete-modify-are-ok/41266/3?u=laurent