# Changelog

> True HMR for Lit components, CSS delivery helpers, and a DevTools timeline for Vite.

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## Version 0.20.1

Oct 19, 2026

A patch of fixes: the Lit tab in Firefox DevTools works again after opening blank since 0.19.0, server-rendered elements hydrate with the source overlay on, and closing a panel tab always clears what it drew. Nothing needs action to upgrade.

### Fixed

* **The Lit tab works in Firefox DevTools again.** Since 0.19.0 it opened blank in Firefox; it now shows the site’s status and the inspector once the site is enabled.
* **Server-rendered Lit elements hydrate with the source overlay on.** An element whose template renders another custom element no longer re-renders in the browser with a warning about an edit that never happened, in Astro or any other server rendering.
* **Closing a panel tab always clears what it drew on the page.** The anatomy overlay, outline and Live mode no longer outlive a panel tab that closed too fast to say so, or crashed.
* **The panel stops filling the console with warnings.** Opening it no longer prints Web Awesome’s `size="small" is deprecated` warnings, and a panel in a tab of its own, at `/__lit/` or in Firefox’s DevTools, no longer warns that the in-page channel has no handshake targets.