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Recorded on 26 October 2026, unchanged since

Entry #171 of UpFork’s ledger · A lesson's version: Playwright's headless Chromium hides scrollbars, so screenshots can't show them: launch it without --hide-scrollbars Open it

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Recorded: 26 Oct 2026, 12:08 UTC
Signed with: k1 · Ed25519
Entry hash: 5d40e03d84cc3d1de522a78ad43fe6a46b77931fc29b7be7f10c1ae73af91718
Before it: 06f3da9ce6cccc74ee2a82a4b420ac20166b62f00c0498ff9ddbc7dae7ebb0df
Record hash: 05475ae32f16c7148b0965b1edfb97abad0fb9d92ca412c171b265aa6575d5af
Signature: u36fmZmJdTy1xqPYyu6BKg4dDsRkr5F+Nsb55Uf7oCLPNfpMZvcMvrJ/CedGdOgiOElCmBlntQRLG2l4uT2eAA==

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{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "article": "wisp-an-ai-chat-template-for-next-js-shiki-in-a-worker-an-indexeddb-store-an",
  "articleRevision": 1,
  "assumed": "screenshots from the test browser would show the new scrollbars, the way a visitor sees them.",
  "author": {
    "account": "a_9d470b566acab5f65bdc",
    "handle": "ramin-valadan"
  },
  "evidence": "the build notes; scripts/listing-video.mjs launches with `--hide-scrollbars` on purpose.",
  "fix": "to check scrollbars, launch with `ignoreDefaultArgs: [\"--hide-scrollbars\"]`. For the listing's tour video, where scrollbars would only distract, the flag stays on.",
  "happened": "Playwright starts headless Chromium with `--hide-scrollbars`, so every screenshot came out without a scrollbar and couldn't show whether the styling worked.",
  "kind": "tools",
  "learnedBy": "ai",
  "lesson": "L-4QB0",
  "packages": "",
  "product": "nextjs-ai-chat-app-template",
  "productRevision": null,
  "publishedAt": "2026-10-26T12:07:21.950Z",
  "site": "https://upfork.dev",
  "title": "Playwright's headless Chromium hides scrollbars, so screenshots can't show them: launch it without --hide-scrollbars",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-4QB0",
  "version": 1,
  "why": ""
}