Issues

• TDK CLI integration: run a Lit + Vite app as a local TDK resource

  lit/lit#5395 · Filter by author kburym opened on Oct 1, 2026

• Overriding ElementInternals values has no effect with Lit SSR

  Bug

  lit/lit#5393 · Filter by author vollowx opened on Oct 1, 2026

• sega.com on LitElement

  Feature

  lit/lit#5386 · Filter by author Unleash7878 opened on Sep 10, 2026
  1

• [labs/router] getTailGroup selects the wrong tail: unanchored digit regex and lexicographic group ordering

  lit/lit#5381 · Filter by author SisyphusZheng opened on Sep 7, 2026

• No value returned by getComputedStyle in the firstUpdate hook on Chromium 151 and later

  lit/lit#5372 · Filter by author wattachai-lseg opened on Aug 14, 2026
  5

• useDefault: true doesn't work when a property is initialized to null

  Bug

  lit/lit#5366 · Filter by author justinfagnani opened on Jul 25, 2026

• [labs/signals] SignalWatcher elements are never garbage collected (FinalizationRegistry heldValue + elementForWatcher WeakMap cycle)

  lit/lit#5364 · Filter by author marcuslindblom opened on Jul 22, 2026
  1

• [labs/ssr] Support scoped custom elements

  Feature

  lit/lit#5359 · Filter by author tomherni opened on Jul 9, 2026

• [@lit/task]: Pass run args to pending renderer.

  Feature

  lit/lit#5353 · Filter by author jamestalmage opened on Jun 13, 2026

• [task]: Add a "reset" method.

  Feature

  lit/lit#5352 · Filter by author jamestalmage opened on Jun 13, 2026
  2

• [ssr] Hydration breaks when <selectedcontent> clones <!--lit-part--> markers from <option> elements

  Needs Discussion
  Bug

  lit/lit#5349 · Filter by author bennypowers opened on Jun 2, 2026
  1

• Child custom element with attributeChangedCallback() messes with render() method

  Bug

  lit/lit#5348 · Filter by author thomaslule opened on May 31, 2026
  3

• [labs/router] README documentation for enter() callback doesn't match implementation

  Task

  lit/lit#5328 · Filter by author jobrien874 opened on May 8, 2026

• Amend @types/node constraint

  Task

  lit/lit#5323 · Filter by author SignpostMarv opened on Apr 27, 2026

• wrapJsxDev stringifies render thunks instead of executing them - raw function source leaks into page HTML in dev mode

  Bug

  lit/lit#5321 · Filter by author LeeBurton opened on Apr 26, 2026
  1

• [lit-html] unsafeHTML directive doesn't work correctly with Trusted Types

  Bug

  lit/lit#5320 · Filter by author nelstrom opened on Apr 24, 2026
  4

  

• [labs/virtualizer] Bare virtualize() directive zombies hijack a shared ancestor scroller after host detach

  lit/lit#5314 · Filter by author graynorton opened on Apr 21, 2026

• [all] We should drop @web/test-runner-saucelabs

  Bug

  lit/lit#5312 · Filter by author ankitdn opened on Apr 21, 2026
  3

• [labs/virtualizer] ScrollerController is not shared between virtualizers on the same scrolling ancestor

  lit/lit#5311 · Filter by author graynorton opened on Apr 21, 2026
  1

• [labs/virtualizer] Masonry: incremental layout updates for large collections

  lit/lit#5310 · Filter by author graynorton opened on Apr 20, 2026

• [labs/virtualizer] Restore CI coverage for scrolling/writing-mode/direction tests

  lit/lit#5309 · Filter by author graynorton opened on Apr 20, 2026

• [labs/virtualizer] Masonry: dual-semantics aspect-ratio API (visual vs. logical)

  lit/lit#5308 · Filter by author graynorton opened on Apr 20, 2026

• [lit-html] removePart() leaks end marker comment, causing unbounded DOM accumulation under sustained churn

  lit/lit#5298 · Filter by author graynorton opened on Apr 11, 2026

• [labs/virtualizer] When using a grid layout, the Scroller overflows horizontally due to the scrollbar

  Bug

  lit/lit#5297 · Filter by author friuli-jokyo opened on Apr 11, 2026
  2

• [labs/virtualizer] Default keyFunction breaks rendering when items contain non-unique scalar values

  lit/lit#5296 · Filter by author graynorton opened on Apr 11, 2026