Playwright v1.64.1 patches Electron window loss and Chromium cross-origin redirect regression

Microsoft released Playwright v1.64.1, a patch fixing two bugs: an intermittent loss of a packaged Electron app's first window and a Chromium 155+ regression that aborts preflighted cross-origin redirects when any route is registered.

Markdown twin JSON

Open Source & Tooling Primary source release / significance 2

Briefing

Playwright: Microsoft released Playwright v1.64.1, a patch fixing two bugs: an intermittent loss of a packaged Electron app's first window and a Chromium 155+ regression that aborts preflighted cross-origin redirects when any route is registered.

Why it matters

The Electron window bug can break automated testing of desktop apps, while the Chromium redirect regression could silently break web scraping and automation workflows that rely on cross-origin requests. Both issues were introduced in the previous minor release, making this a necessary stability fix for users on the latest version.

Sources

Primary source · Playwright · 2026-10-14 — microsoft/playwright v1.64.1

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Topics: Microsoft, Playwright, Chromium, playwright, bug-fix, electron, chromium, regression, browser-automation