[Bug]: Duplicate "entangled" collaboration cursors in Yjs fragments across parent doc & sibling subdocs

[ideosyncretic]

Affected Packages

extension-collaboration-cursor, extension-collaboration, react

Version(s)

2.4.0

Bug Description

When using Liveblocks and Yjs subdocuments, TipTap collaboration cursors on fragments become duplicated (appearing in other fragments) and "entangled" (moving in tandem) across the parent Y.Doc and sibling subdocs, depending on the length of fragment content.

https://github.com/ueberdosis/tiptap/assets/19484719/20a18a1d-d5cc-4274-9542-2151d08b03dd

Browser Used

Chrome

Code Example URL

https://github.com/ideosyncretic/liveblocks-tiptap-yjs-subdocs-collabcursor

Expected Behavior

Collaboration cursor state should not sync to unrelated fragments.

Additional Context (Optional)

• The issue persists with different Y.Doc shapes, whether the fragments are top-level types or in nested Y.Maps.
• The attached code example is a Kanban board where the project Board is the parent Y.Doc, Lists are subdocs.
  • 
• We have only tested this with Liveblocks as Yjs provider, because other providers do not support subdocuments.

Dependency Updates

• [X] Yes, I've updated all my dependencies.

[andrictham]

Any updates on this one?