Issues

• UndoManager: undo/redo deletes too much after a deleted type is restored (redone item merged with neighbour)

  yjs/yjs#806 · Filter by author wigwugs opened on Sep 27, 2026

• A throwing event handler permanently breaks future document events and observers

  bug
  yjs/yjs#799 · Filter by author ben-ashton-safetyvantage opened on Aug 21, 2026
  

• Undo can restore sequence items with unreachable right origins

  yjs/yjs#794 · Filter by author sibnerian-oai opened on Aug 3, 2026

• Deleting non-empty Y.Map child from Y.Map triggers YMapEvent with **empty Y.Map** as oldValue.

  bug
  yjs/yjs#786 · Filter by author WebCoder49 opened on Jul 9, 2026
  2

  

• discuss.yjs.dev is down - Let's Encrypt https certificate expired 5 days ago

  bug
  yjs/yjs#783 · Filter by author krassowski opened on Jun 16, 2026
  3

  

• cleanupFormattingGap handles non-primitive attribute values incorrectly

  bug
  yjs/yjs#776 · Filter by author 12joan opened on May 8, 2026
  

• Type pollution with global.d.ts Y.js v14

  bug
  yjs/yjs#774 · Filter by author nperez0111 opened on May 7, 2026
  3

  

• yjs-inspector returns 403 Forbidden when loading example data.

  yjs/yjs#764 · Filter by author ahaoboy opened on Feb 19, 2026

• Don't destroy subdocs on deletion from parent

  bug
  yjs/yjs#750 · Filter by author itsmebasti opened on Nov 29, 2025
  1

  

• Should getXmlElement accept a type argument?

  enhancement
  yjs/yjs#748 · Filter by author krassowski opened on Nov 12, 2025
  2

  

• Tests failing in node.js, also on CI

  wontfix
  yjs/yjs#745 · Filter by author raimohanska opened on Nov 8, 2025
  1

• YText._integrate catches all errors

  bug
  yjs/yjs#744 · Filter by author raimohanska opened on Nov 7, 2025
  1

  

• ydocs with a lot of deleted map entries (tombstones) leak memory

  bug
  yjs/yjs#741 · Filter by author Xyz3R opened on Oct 21, 2025
  3

  

• Undo manager sometimes generates wrong states when undoing

  bug
  yjs/yjs#736 · Filter by author javiergonzalez-synth opened on Oct 6, 2025
  1

  

• Server crashes with RangeError after reconnecting to large collaborative document using y-mongodb-provider

  bug
  yjs/yjs#714 · Filter by author lukenc opened on May 20, 2025
  

• Y.mergeUpdates has exponential running time

  bug
  yjs/yjs#710 · Filter by author laurmaedje opened on May 9, 2025
  3

  

• Y.Doc items integrated in different order after sync from server, possible corruption from UndoManager

  bug
  yjs/yjs#699 · Filter by author james-atticus opened on Mar 17, 2025
  5

  

• Using setNodeAttribute to modify the checked attribute in the task list, and then using a snapshot, there are no records

  bug
  yjs/yjs#695 · Filter by author luoluoTH opened on Mar 4, 2025
  

• yjs v14: issue with move operation

  bug
  yjs/yjs#694 · Filter by author Horusiath opened on Feb 21, 2025
  1

  

• Using a Y.Map like an ordered tree

  enhancement
  yjs/yjs#692 · Filter by author Yeshan-K opened on Jan 28, 2025
  

• Denial of Service vulnerability: run-length encoding can be exploited to lock JS threads

  bug
  yjs/yjs#687 · Filter by author gvergnaud opened on Jan 9, 2025
  1

  

• YXmlElement.clone() only copies string attribute values / does not support numbers

  bug
  yjs/yjs#680 · Filter by author tomi-bigpi opened on Dec 16, 2024
  6

  

• TypeScript error when importing YJS from a CommonJS package

  bug
  yjs/yjs#677 · Filter by author jthemphill opened on Dec 3, 2024
  8

  

• Map updates applied in changed order lead to inconsistent transient states

  bug
  yjs/yjs#674 · Filter by author raimohanska opened on Nov 22, 2024
  

• documentation is incomplete

  wontfix
  yjs/yjs#656 · Filter by author siyou opened on Jul 11, 2024
  2