v0.27.2

Workspai v0.27.2 Release Notes

Release date: May 10, 2026
Version: 0.27.1 -> 0.27.2
Release posture: stabilization-only

Executive Summary

v0.27.2 is a targeted stability patch that eliminates a class of uncaught Webview is disposed errors in the Setup & Installation panel. When users closed the panel while background async checks were still running, deferred postMessage calls fired against an already-disposed webview, producing noisy uncaught errors in the extension host output. This release makes every such call disposal-safe.

What Is Fixed

1) Webview disposal safety in Setup & Installation panel

Problem: Closing the Setup panel mid-check triggered up to 3 uncaught Webview is disposed errors per session. Async requirement checks, setTimeout-based polling, and setImmediate initialization all posted messages after the panel was gone.

Solution:

• Added a private _isDisposing flag on SetupExperiencePanel.
• Registered an explicit onDidDispose handler that sets the flag and triggers cleanup before any internal state is torn down.
• Introduced _safePostMessage(message) — a thin guard method that checks _isDisposing before delegating to this._panel.webview.postMessage(), and wraps the call in a try/catch to silently absorb any residual disposal errors.
• Replaced all 20+ direct this._panel.webview.postMessage(...) calls with this._safePostMessage(...).
• Moved the onDidReceiveMessage listener registration into this._disposables so it is torn down as part of the standard disposal lifecycle. Added an early-return guard: if (this._isDisposing) return; at the top of the message handler.

Scope: src/ui/panels/setupExperiencePanel.ts only — no behavior changes, no new commands, no API surface changes.

Changed

• All internal panel message dispatch now routes through _safePostMessage() for uniform disposal safety.

Fixed

• Eliminated Webview is disposed uncaught errors that appeared in VS Code extension host output when closing the Setup & Installation panel during active requirement checks.